What motivates me is that I'm convinced this is what I want to do for the rest of my life, I love it and I cannot think of doing something else instead of this.

Ask yourself what you really want. Remember that part of alice in wonderland where she meets the Cheshire cat and asks him for advice where should she go and the cat asks back "where do you want to go?" to which she replies it doesn't matter as long as I get somewhere and the cat says then it doesn't matter where you go, any way will do.

tl;dr - Ask yourself where do you want to go and realise where you're now, then you'll see the path and what you need to do in order to get there.