It is probably the case that, somewhere in the past, you did something that made you more happy/productive/fulfilled, but you don’t do it anymore, for no good reason. Think about that, and do it again, preferably instead of one of your less desirable behaviors.
But Feynman’s brilliance was not solely due to his natural cognitive abilities. He relied on a method : a simple technique for seeing the world through the lens of open-ended questions, which he called his “favorite problems.”