To think better, you have to “know thyself” first.
We all have some kind of biases—either good ones or bad ones—and the more we get to know them, the better we can think and generate ideas that work.
Also going with analog—use a pen and paper, or a hand-drawing app—is a good way to think better. It allows you to do more non-linear thinking than using a keyboard, and also allows your brain to function in a way that you’ve never imagined.