When I ponder what motivates me, drives me and gets me moving, there is really only one good answer: Momentum. It sounds a bit counterintuitive since momentum is the thing that you get when you are already on your way. I see it a bit different. You just need to start something. The act of simply starting creates the momentum for me and then I want to keep it moving and that in turn feeds the motivation.
There are times when I feel a bit directionless and have to figure out my next move. As long as I start something which is really not much more than simply picking a direction to go in, that get's things moving. The way that I keep the momentum going is to set achievable goals...better yet, put a process in place to maintain and even accelerate the momentum.
It's amazing how doing those simple things can really undo the logjams in my life. The worst thing for me to do is think things to death. I'm so good at overthinking and I've done it many times in my life. Whenever I look back on those times, I clearly see the ineffectiveness of it.
It doesn't matter what you want to do. Maybe you want a new job. Maybe you want out of a relationship. Take a step in that direction and let momentum take you where you want to go.
If you want to tiny house then get started down that path. Look at trailers. Reach out to someone like me for advice. Do something. That's what will create the forward motion. Then all you have to do is just keep it going. Momentum...