I know how you feel. When I was younger a achieved some amazing things. Co Founded and supervised an organization credited with electing the first Democratic Mayor of a city in 96 years. Leading the youth component of an effort which registered 4,000 in Virginia in 1964 (That was called Mississippi Summer).
Later I designed and directed a program which changed a program from helping 900 people in jobs, with less money to a program which transitioned 3,000 people to jobs. Throughout all of these experiences I knew that I had been inadequate. I could specify all the mistakes and where I fell short. Also, those people who appreciated my work, were not appreciating me, only my performance.
Today I know that I am a necessary, though insufficient, part of the solution (or effort) that I participate in. This took me more than 30 years to understand and accept that I was good enough, instead of being worthless.
I am not healed, but have made a long march toward healing,
We all have different stories, but we all are just the same.