Am I too old?

So, I am turning 31 in a couple of weeks, and I've been chasing for music for some years now (like 8). I live in London, because I got a masters here but a big factor was also living in a city with a "real" music scene. So I have always been passionate and committed to pursuing music... I have an indie / alternative band with a some other younger guys and we've got some minor success and tracking, not enormous but not anything. And I don't know, this self-sabotage feeling of me being to old has being creeping in for some time now. It's not like I want to be a big star, but at least I would like to play some decent venues and maybe festivals. But I am not sure if I am following something futile. I already know that the music industry is on an all time low, but this is something I love so much. On the other hand, I am doing very well in the personal/professional side of things, so it is not like I am "sacrificing" a better future, but sometimes it feels like I am putting in so much work into this just for it to die from nothing.