Knowledge

If we can not sit for a long time how can we achieve our goal in meditation.yogis in India says that are impurities in our bodies which get discharged.Through exercises and yoga we can clean our body.this is a natural system. second step is mental yoga.By observation we can decrease our thoughts and increase our meditation and can achieve bliss[sat-chit-ananda].
Steadfastness--we can achieve stillness of mind by practice.Lord krishana said in Gita that we can achieve this stat by giving-up worldly desires and by long practice.
Self control-If our body,our sense objects are controlled than what remains left.Kings and dictators wants to control on other countries and people but they can not can control themselves.
Whatever routine method is adopted should remain consistently followed and remain in practice throwout.Distracted and withdrawn from all the feelings senses of pleasure and pain irrespective of wherever he lives.

Knowledge

Non violence-It is not to create problem for others,rather help them to solve it.
Patience-It is a very good formula for peacefully life.If we delay anger and do not response,we can see that quarrel comes to an end.Buddha said that patience is the highest form of asceticism and through it one can reach nirvana.for monks and nuns there are four qualities of patience and tolerance to maintain.
1-If someone pushes you around,you should be tolerant patient.
2-If someone shows anger to you,you should not respond with anger.
3-If someone embarrass and insult you,you should not answer back.
4-If someone hits you,you should not strike back.
Uprightness service to the teacher-In ordinary life we see that if we want to be a good mechanic we should join the institute of a learned person.we can not take more of his ability if we does not regard him.But here is not an ordinary teacher he is Guru[an enlightened soul.So if we serve him heartily.than we will be able to get more and more.we should surrender him so that he can fill our empty vessel.
Purity of physical body and mind-We should clean our body.we are going to meet God,and vehicle is our body.we should look after it by yoga exercises,music,dance so that we can fit our body for meditation.

Knowledge

amanitvam adambhitvam,ahimsa ksantir arjavam
acharyopasanam saucam,sithairyam atmavinigraham.--7
Humility[absence of pride],integrity[absence of deceit],non-violence,patience,uprightness,service of the teacher,purity[of body and mind],steadfastness and self control.
these are main factors illegibility for knowledge.
Humility[absence of pride]--Gita teaches to avoid living with such vanity.every type of wars, quarrel, disputes,comes from it.you can see destruction from centuries by ego.you can see Hitlers,Changez khans,Alexenders,comes from it.Quarrel in a street and in a home,it may be in husband and wife or dad and son .The root cause of this is our ego.So our saints,it may be Jesus,Nanak,Krishana,they all tried to escape us from it.
Void of vanity[absence of deceit]--We always try to show people this and that.I am superior of all.I have a lot of money or property.I have a lot of knowledge.I am wise.We all wants to sit on the upper level of the ladder.
Non violence

Elements of the field

mahabhutany ahamkaro buddhhir avyaktam eva ca,
indriyani dasai kam ca,panca ce ndriyagocarah.--5
iccha dvesh sukkam dukhume,sangath,chatana dhrti,
etat ksetram samasena,savikaram udahrtam.---6
He bestows to the field five sense organs nose, tongue,eyers,eyes,and skin to gratify,smell,taste,sight,hearing,and smell.Further more to make the field active and perform various deeds he gave organs like hands,legs tongue and to complete the functional field.I added,wisdom,intellect,mind. desires, enmity,joy and pain.Physical body, conscious all these when exits together form.this all is called as field.
the ego means that sum total of these elements we think like 'I'.we do not know that we are 'BHRAMN'.THIS IS DUE TO ILLUSION.we identify with this as i.we do not know that we are knower of the field.[WITNESS].but this experience is of samadhi.so to realize this we should know ourselves.these words from maharishi Ramana,"So long as one thinks he has a fofm,the world and god too have forms.when one is the formless self,who is there to see?it is itself the eye,complete limitless.

saints sung songs on this subject

rishes bahudha gitam chandobhir vividhaih prithak
brahmasutrapadas cai va hetumadbhir viniscitaih.==[4]
This has been described many a times by our ancient saints[Rishies].in various forms even much before the Gita was written.And this is incorporated in details even in vadanta.this definably and clear knowledge is confined in brhamsutra as well.
Truly speaking,as and when someone attains that sup ritual experience he would sing and dance, experience that bliss.It is like inviting others to share that ecstasy.this extra ordinary joy automatically becomes poetic in expression.

DEEP SLEEP AND SAMADHI

But in deep sleep you know nothing but feels anandha[bliss].you says in the morning i slept very well.i do not know anything.now in deep sleep your body,mind,sense organs were slept but not observer.but there was not observer and observed.they were one.this is like samadhi.the difference between deep sleep and samadhi is only that in deep sleep you were not aware due to illusion.but in samadhi you know the bliss[self]. because ther was not watcher and watched,observer and observed.In biography of j.krishanamurti by mery lutyen ,she explained that when krishanamurti used to say in his speeches "observer is observed".It was very difficult for me to described.this is the feeling of samadhi when there remains nothing only bliss.words can not describe this.you see knower and known never meets when meets there is bliss,silence.
Likewise there are three stages of a human.childhood,youth and old age.the body will change,in every stage.our mind will change sense organs will change but not seer[knower].Field will change but not knower of the field.
So lord krishana describes us that who knows the difference between field and knower of the field,he is wise he is juani,according my views.

Field and knower of the field

Now lord krishana describes you know 'me' not body but ultimately truth and you are also 'That'but due to illusion you do not know.Lord krishana says that the knowledge of the field and knower of the field is real knowledge according my views.As has been suggested by Lord Krishana.
You can see in yourself.Suppose you are running.your breath is very fast,your legs and body is tired.but you can see in yourself Someone who knows of the breathing and tiredness.you are studying but there is someone who knows of all your activities of studying.
There are three stages in 24hours.Vdanta called it jagrit[awakening]suvpon[dream]and suspti[deep sleep].There is someone who knows to the activities of your awakening.you says to day my body is upset.now in awakening some part of you knows everything.
second is dream.you went to sleep.your eyes were closed.but there was someone which did not sleep.In morning you describe like this.i saw a lion in my dream.I saw a big house at night.the dream was according to your tendencies.but there is someone who describes in the morning.