Expecting exponential personal growth is obviously completely unrealistic and you’re setting yourself up to fail, so I’d rethink that goal for someone that’s steady and linear.

Most masters are still teaching degrees - you’ll learn and practice using things but I guess you do that daily anyway?

Maybe consider a MRes, MPhil, or PhD if you have a passion for creating things? I went back to do a PhD after working, but only four years in my case.