find another way in life

today, I feel that I am losing some kind of confidence.
I am doing well until now, but I don't know whether I will be able to do well in the future.
I am not a young man, but I still need to know how I can do well and when I can feel good.

Find Another Way in Life

Today I feel like I'm losing some kind of confidence. I've done it well until now, but somehow I'm not sure anymore that I'll be able to do it well in the future. I'm not that young already, but I still haven't found out what am I good at and what makes me feel happy.

I'm doing well = I feel good (eg, How do you do? - [I'm doing] well, thank you.)

to do smth well = to be successful in [doing] smth, to do smth good, to show good results in ot at [doing] smth, to be qualified for [doing] smth, to be specialist or professional at [doing] smth, to be good at [doing] smth

PS.

well, 1) I'm not a native speaker. and 2) I've not only corrected words which are 100% mistakes but also placed words that sound more natural to me instead of words that you wrote (even if your words were quite appropriate as well).