Direct path by observation

nanam kartarm yaddha,darstha anupasati,
gunebhyas ca param vetti,madhavam so dhigacchati.--19

When a person becomes witness due to his knowledge.when he becomes witness of all the activities.actions,and knows that all the deeds are work of gunas by nature[rajas,sattava,tahmsa].it is the act of mind,body,sense organs but not by witness[me].I am not doer but only 'I AM'only witness and can watch the activities of these things and thus by observation he feels the eternal peace of the self.
It is a very valuable solaka of Gita 19th solaka of the 14th chapter.this is the origin of buddha's vippasana.Buddha said,"watch your steps when you are walking.watch your actions when you are eating.watch your breath when sitting.watch your mind every time.
When practically we start watching our mind than thought process begins to decrease and we feels a cool,peaceful state of mind.if you will start this practice you will feel the taste of bliss[sat-chit-ananda].but we can not define that state through words. If you ever studied j.krishanamurti he says observation should at any time.so when a man becomes observer of his own mind then he can get the self which is our real nature.now your attitude will change towards life.you will no live like an ordinary human.the theory which you have read will becomes practical.this experience one day can lead you towards salvation.
so main point is to observe closely activities of mind and body.it may be Buddha or it may be osho or j.krishanamurti they will describe you the path of observation.
As i am a follower of sant nikka singh ji.he used to teach Bhagwat Gita.we five devotee used to go at ashram at 3A.m for listing Gita.he was a great saint.he never touched money in his whole life.one day he said to me,"when all will go at7a.m.you come to me."when i entered the room he said,"lock the door and take the holy book of Gita"and i did this.
I started to read solakas of Gita of 14th chapter and he explained it one by one briefly.when i red 19th solaka he explained it and after that he said,"It is enough.if you can follow this solaka you will see the truth.there is no need to study further."it is an event of 1982.sant ji died in 1983.In 1986 i red osho and started his dynamic meditation and after i used to sit for two or three hours in observation.and one day i felt that bliss.and after that i i am practicing this method.it is very interesting like a discovery.no one can imagine that such a beauty lies in human body.It is why shri guru Arjun dev ji explained in Gugubani;ish dehi ku simraha dev,
so dehi bahj har ki save
meaning is that this body is very precious .Angels davi davata[God, Goddess]wants that turn when God will give them turn of human body so that they can realized them self.I described this solaka as my intelligence but words can not describe to bliss.they can only indicate the subject.
Pamlo first sanasin of u.k how lived all her life in Himachall[India]in retreat wrote ;two things are necessary for meditation.
1-Patience and Preservence.

sattava is upper level,rajasa in middle,thamsa lower

urdham gacchanti sattvahastha,madhya tistanti rajasa,
jaghanyguna vrttisthu,abho gacchanti tamasah---18

Those who establish in goodness rise upwards.The passonate remains in the middle[regions].the dull steeped in the lower occurences of the modes sink downwards.---18
The human body is like a cross road.who stayed in sattav guna[goodness]goes to higher level from human body.like god goddess,angles.But who stays in rajas gunna stays in center as a human being.In lower level guna thamsa goes to levels as plants,stones,devils,etc.this is our state after death as described in gita.
But if we are free from gunas we do not go anywhere but becomes one with the self[God].this is self realization in this body and afte body we remains our being.so formation of body is due to these three gunas.when in human body we realize sat-chit-ananda.this is our destination.

Effect of these three gunas.

sattav sanjayati jnamam,rajas lobah eva ca,
parmadnindra tamaso,bhavato janamama eva ca.--17

From goodness arises knowledge and from passion greed and from dullness arises negligence and error.--17

We can find these characteristics of 'gunas'in ourselves.sometime we remains peaceful,joyful and sometime greedy,our demands[vasnas] arises and sometime dull and lazy.
so this indicates us that we should know what we are.what state of mind is going on in this time.if we can remain aware of that state of mind than we will be able stay in sattav guna and can leave rajasa and tamasah. because for going to state of self realiation[samadhi] we have to cross three gunas,and for this we have to stay more time in sattav guna.from sattav guna we can jump in self not from rajas and thamasa.

Fruit of three gunas

karmanah sukrtasya huh,sattavicam niralam phalam,
rajasas tu phalam dukham,agnanam tamasah phalam.---16

The fruit of good action is said to be of the nature of goodness and pure and while fruit of passion is pain and the fruit of dullness is ignorance.---16
Swami Ram threeth used to say we get that thing which we give.if we give happiness or love than it will comes to us by happiness or love.If we give hate ,anger, jealously to an other than it also return to us one day.
simply meaning of this solaka is that we harvest that crop which we sow.our good karmas leads to our life towards love,happiness,and if we do bad actions that leads us toward wickedness and pain.
so the fruit of good actions is goodness and pure and fruit of passion is pain and fruit of dullness is ignorance.

if ends a man in passion he reborn on earth.

rajjas pralayam gatwa,karmasangisu jayate,
tatha pralinas tamasi mudhayonisu jayate.--15

If any one dies rajjasguna[passion] as the essence of 'rajasguna'he returns back to this very loka to enjoy or suffer the deeds of previous life because of his undying hunger for the fruit of his karmas.that is why Gita preaches to do karmas but not bother about the fruits.reflecting but tamas being the basest.darkness of karmas all around is reborn among the basest animals and suffer.
But those who have a mix of all these three gunas depending on the ratios may take birth with the difference between a street dog and a dog among the royalty.
at the time of death if one leaves the physical body in the state of 'rajasguna,[passion] then he born in the company company of people who attached to action this rajasguna lies in those people who are mostly effected by worldly affairs.To achieve wealth,property,car,house,children,etc.so he born according to his will of passion,in those people who are mostly attached to action.
And if he dies in state of dullness than he goes to lover levels of a ladder of life as animals,birds,devils etc.in India we use a phrase,"antaha mata so hi gata".meaning is as we thinks in the time of death there we goes according our deeds of karmas.
So meaning of this solaka is we born in next life as our stste of mind is in last time of death.

effect of sattwa[goodness]in time of death

yada sattva pravarddhe tu,pralayam yati dehabhrt,
tado ttamavidam lokan,amalan pratipadyat.--14

When one leaves this gross body and subtle soul departs in under the influence of sattvaguna[goodness]it reaches to the highest loka called as 'paramloka' witch is the abode of God himself.
According bhagavadgita it is the Gunas at the time of death which establishes death and these after in case of death under the influnce of sattvaguna the soul enters the higher planes which is abode of God.
If at the time of death we were in sattavaguna[goodness] in the state of joy and knowledge we go to heaven upper level of the earth and take the form of davi,davata,[god, goddess.according to gita our last moments effects on our next journey[lives.It is like as if we go to station and take the ticket of that city or village.so when a human changes his subtle body.if he leaves his physical body in the state of sattavaguna in peaceful,joyful knowledgeable state he goes to upper level of the ladder and reborn like an angle,god.goddess. but it will be according life as we have lead.then we will go to heaven,or in a rich family as due to our good deeds.

About next lives

In Gita it is a vast subject about death.in other realigns did not shed light on this subject.and now a days this opinion is for most in western countries.as last year i saw a movie based on Bhagwat gita in u.s.a.It was a story of a young girl who reborn in an other state of U.S.A.it was a real story.she describes every event of her previous life.
according to this theory death is the name of leaving the subtle to physical body.it is also narrated in Maharishi Ramana's biography when he was on walk with a devotee.he lay down on a mountain and his subtle body left his physical body.devotee began to weep and his physical body became dark.maharishi was looking this all in his subtle body.but after some time his subtle body entered in his physical body.this is not very uncommon in siddh purshas.
Now what is the effect of these three gunas at the time of death to reborn,we will understand this by 14th solaka.the subtle body is our blue print[seed]to grow in other birth.