Find out what you really want, don't care what others think. This way it's much more realistic to have success, and you will probably also be much happier. I don't think many would want to be a CEO if they didn't care what others think.
I think the real problem is the pool of people they can compare themselves to is so much larger. No matter what your interests, vocation or career it's easy to find someone on social media who appears to be an order of magnitude better than you are.
One thing that changed for me last year was that I finally got the passion to get through that list of random topics I wanted to get through without the pretense of trying to prove anything to anyone. It really did work, even though the feeling towards those pretenses still linger a bit.
Here on HN, there was once something that stuck along with me, on an article about how people found success in one-person companies. One said that he did what he needed to do and then just find what could be sold from that. It's a simple statement, but what it says lacks that pretense of finding the truth in something, like finding success in other people or even unattainable quality of work.