Hmmm, interesting question.
I always think/daydream/extrapolate on things I want to happen, things I want to do.
It's almost like a "vision quest" of sorts, visualizing what I wish to do, and how I wish to do it.
Honestly I think these trips inside my head are part of a self motivation process. It's bizarre, but it is very effective. If I visualize something I wish to happen really badly, over and over agin, At some point that goal becomes legitimized, and I begin planning how to do it. Once my plan is complete then I begin executing it. Sometimes it takes a few weeks, months, or even a year, but once I set my mind to something it's a done deal, it's going to happen, I'm going to do it, end of story.
Getting inside your own head is healthy. It's probably the most "reflective" process I enegage in with any regularity. You don't lie to your self when you are in your own head, there is no need to, you just expose yourself to your dreams and see where they take your mind, and heart and then at some point it will register in your consciousness, and you'll know if you want and need to snatch that dream and promote it into reality...