There is such a thing as destiny.
I have faced very few disappointments at the human level. It has been a long journey, from being a Stanford graduate wanting to become a hotshot lawyer to helping out the deserving. I feel I was meant to do this. Call it destiny.

You cannot solve everyone's every problem.
I don’t feel burdened by people pinning their hopes on me. When I started out, a leading social worker told me, “You will encounter all sorts of people during the course of your work. Some of their problems will not be solvable. And the earlier you recognise this and distance yourself from these problems, the sooner you will be able to successfully direct your energies into solving other problems that require your attention.”

Each experience in life is unique and rewarding.
I went for the Stanford reunion in the US recently where I met my illustrious peers, whom I had met last when I was 19. While talking to them I realised, and so did they, that my level of satisfaction with life was higher. There was a sense of 'wholeness', of being complete. This is what they feel they are lacking even in their retirement years.