Re: Sax Query
It's always possible to become a good saxophonist.
The curve...well, in my opinion, the sax is probably one of the easiest instruments to learn, but probably the hardest there is to master. Being 22, you need to make sure you're going to have time in your schedule for this, and be able to practice A LOT, especially because hof aving a private teacher. A good one will push you on practicing. If you don't have time for practice, chances are you'll get frustrated and quit.
Good luck on what I would call a great journey, I hope the saxophone becomes a great part of your life.