Whoah!!! You've already posted stuff on your facebook page!!! You never said that!!! Now that must take some real guts!! Good on you!!!
You know I'm definitely not sure that you're giving yourself enough credit for your achievements. Maybe a little more faith in yourself could help??

And I'm wondering if maybe you could step back a little more and enjoy the journey itself to perfecting something. I'm thinking that the actual process, step by step, to achieving something has to be pretty fulfilling in itself. Kind of like something "magical" unfolding, if that makes sense??
After all you know that you WILL get there, so why "waste"/ignore the how and the lows/highs along the way. I'd say they are really integral in the satisfaction/feeling you get when..................

As for talented musicians though, depending on the music/scope of the music you're playing, isn't it sometimes a little about what you can add/adding feeling/yourself to the song e.g. slightly lengthening/shortening notes/pauses if it feels right or how you play??? Meaning that whatever "schooling" you've had an important part still comes from within?
Not quite sure how you'd apply that to Mario though!!

BUT, I'd say you've got way more talent than you think AND FACEBOOK.................!!!!!

Alison