((((((Canders)))))) Thanks. Sorry about the "should"...I've been trying to stop doing that, but it's something I do quite a lot so I'm too used to it. Same about the being hard on myself.

Thanks, that's really kind! I think it's the exams - the prelims are coming up, and it usually gets harder when I'm revising. The ways of distracting my hands I use don't work for long enough.