Dear Balaji
This is very delicate part and really tough phase of life. In such scenario, no body can do anything unless he does something to transform him completely. He needs to feel that circumstances are part of life and life is above all circumstances, to feel that love is not loving one but loving all, to feel that life has got many more gifts & happiness, to feel himself blessed for what he has got, to feel that problem which he used to take so seriously is actually no problem at all!, I would recommend you following:
a) Ask him immediately join any Good Yoga Centre and learn Yoga, Pranayam and Meditation. Yoga will make his body healty, pranayam will increase his "praan tatva" (this helps one's positivity to overcome negativity) and Meditation will help him to raise his level and be knowledgeable enough to understand life really beautiful.
b) To join motivational classes for raising his level and interest in doing good things.
one of such yoga classes which i have myself experienced is Art of living Classes. This has amazing results and can put life in worstest of the worst cases. This course is of very short duration (3-4 days -3 hours daily)
After doing this course and doing it regularly at home (even for 15 min daily), he will surely recover from bad phase and will be even more confident and powerful that what he was in past. Then he can do anything he wants. If need more clarity or want to know more about art of living classes, may call at 011-41759933 or visit website.
Best Regds
vijay
9650066641