Same goes for anyone, including you. If you want to become successful at anything you need to work hard on it and improve and see where it takes you rather than setting out an overly defined goal that will stress and disappoint you.
I guess it has to do with the mindset I had during the years of working hard at improving at math but without actually having a defined goal that would discourage me along the way. Thanks for asking this question because it made me think a lot and I actually realized that this is the mindset I lost in the past two years. I need to redevelop this attitude towards my new hobby, music production if I want to be successful (not famous, but successful).
When it came to math I always wanted to become good but I had never actually set a level or goal for it and I believe that's what always left me wanting to learn more and achieve more, there was no thoughts of failure, just thoughts of what to learn and master next.
After thinking long and hard about this, if I want to see my form of success from my math hobby/interest, in another area, I need to reformulate this concept/mindset into those other hobbies.