A practice I find useful is to have a few projects going that are in different stages. So maybe one you're still planning/dreaming up, one in the core execution

A practice I find useful is to have a few projects going that are in different stages. So maybe one you're still planning/dreaming up, one in the core execution phase, and one that just needs finishing touches. That way you can switch not just between subjects but between modes of working to give your mind a chance to refresh.