It's also a matter of finding the right instrument for you, which could turn out to be a surprise.
I suspect I'm older than they typical HN demographic, but I made several attempts to learn piano over the years and was never able to stick with it. I also tried bass guitar and that was fun (and pretty easy!) but you only get so far without playing in a band which I never had the time for. Then I picked up my dad's accordion (of all things) and got to wondering what it would be like to learn to play a simple song on it.
That was two years ago and since then I haven't missed a single day of practice, learning, or playing for fun. Which surprises the hell out of me, because I'm the kind of person who bounces from hobby to hobby and project to project and rarely finishes anything. It's frankly amazing to have _something_ I can say I have worked on (and towards) every day for a long time. THAT inspires confidence and some sense of self-worth. (And I generally need all of that I can get!)
Sometimes it's frustrating to get "stuck" on a difficult piece or hand movement that's new to me, but I always have to remind myself that I've been stuck before and that I'll eventually get it right with enough repetition, even if it takes weeks. The joy felt when I finally _do_ get it right is so intense that it probably ranks up there with some of the best drugs, minus the considerable negative consequences.