It would not be an exaggeration to say that almost half of our life are spent in trying to understand what life really means and what should be the best means to charter it in the right direction. It is not possible to say a final word on the subject, given the mysteries & complexities of life.
I am reminded of an Urdu couplet 'um-er Dara maang Ker layee they char din, do arzoo Mein beet Gaye do intzar Mein'.
These were the words of the last Emperor of Hindustan, Bahadur shah Zafar, meaning " God gave us four days: Two days were spent in nurturing great expectations & the rest two in waiting for their fulfillment."
Despite the craving for material gains & all that, we do realize that there is an eternal truth about life that it cannot be led to our complete satisfaction. That is why we find people crowding places where religious discourses are being delivered. I happened to come in close touch with a senior officer whom I met in a temple. I was greatly moved by his ideas & simplicity. He always advised me to leave everything 2 god - total surrender. Every morning, he would stop for a few minutes & tell me something which I find difficult to forget. He used to often discuss epics like Ramayana & Mahabharata. We used to debate on many points like the genesis of 'total surrender'. It owes its genesis to Bhagwad gita. Lord Krishna told Arjuna not to be disturbed by the big question about God's existence but leave everything to Him.
Things do not go the way u want to u have to learn to reconcile to the situation u are in. Greta Garbo went to the extent of saying," there seems a law that governs all over actions so I make plans". However ,this does not mean renunciation of action. We have to play our role in the best manner we can, & leave the rest to Him.