I've been doing a lot of limitation practice when improvising. It has helped me see new possibilities because you're forced to try things you might not normally try.
I've done a bit of those myself reading the book "The advancing guitarist". Recommend that book a lot, it's kind of like guitar improvisational philosophy, the book starts by recommending different limitation exercises to study in a progressive manner.
Haven't really gotten past the first one, that was all the modes, all played with a single string at a time. I should return to that book later once I have time to dig back into improvisation.
Yeah exactly! I started that book back before I was probably ready for it, but I do remember doing the single string exercise. I'll have to see if I can get a hold of a copy