How many lists do I need to have in order to keep up my motivation?

You use as many as you need to. Try one, if that doesn't work, use two, and go from there adding lists until you feel confident! There is never too many when it comes to change in your life,

I personally have 3 lists – morning, afternoon, evening. I'm all over the place mostly, have the problem of zoning out too. Routines help me to focus and get things done!