One sure fire way how to guarantee personal growth
People very rarely improve when they have no other example to copy but themselves. You want to grow though. The most effective way how to do that is to look at other successful people for reference purposes and then to model yourself after them.
First get rid of the notion that you can, or should do everything on your own. You lose out on a lot of fun and progress if you cling to your self-projected image that only exists in your imagination.
Success leaves traces behind that you can learn so much from. Find them and follow the trail back to the origin. Don’t be afraid speaking with the people you will find who left the traces. Perhaps they are even willing to become your mentor? Everyone should have one and what can you possibly lose when you ask? A “no” has not hurt anyone ever.