As the title says, at what point did you feel competent enough to join a band? I’ve been playing the guitar for almost 2 years now, and feel like I hit a bit of a plateau, and I’m thinking joining a band might help. At the same time, I don’t really feel like I am good enough to play with others.
Trust me, you’re good enough. Somewhere out there, there’s a drummer who isn’t sure if they’re good enough, and a bass player, singer, etc. Find some like-minded musicians and see where it takes you. I’m not suggesting going thru craigslist and replying to everyone looking for “experienced shredder” or whatever, but there are people out there in the same situation you are.