I usually just start tying something, and it kinda catches. Sometimes I'll pick something challenging that I have not tied before, or just try to make up a pattern. I'm usually rolling along soon enough and will move on to what I need to tie. I also will sometimes lay out and prep everything that I need for a dozen which is sort of like challenging myself to get through it. I like watching some of the better youtube vides for inspiration, but I find that I can spend hours watching someone else tie which is really not that productive.