I have found that having a background as a musician changes the way you approach the world in a very valuable way. I used to be a musician in a very serious way (originally went to college for music) and it has absolutely colored my approach to writing. Music has taught me that if you want to get better at something, all you need to do is practice (mindfully). A lot of people get hung up on "I want to do x, but I'm not good at it" or "How do you get good at y?" The answer, to me, is almost always practice.

I can't think of a single thing you will not get better at if you start doing it every day. Even when I was NOT putting my all into a practice session, I was improving. There are certain drills (for me as a flautist, scales, arpeggios, technical exercises) that just doing and attempting to do correctly - are bound to improve your performance.

When you say you are just bad at something, you are making an excuse to not work hard at improving. "I am inherently bad at this, I will never be good at this, therefore there is no purpose to doing this." I think people tend to do this because they don't like doing things they are bad at. I, for instance, dislike Apples to Apples. I am a resoundingly mediocre player. I don't know if I've even played it once in the past year. But if I wanted to get better at it, that would be what I needed to do - play it. Often.