It's something you either have within you, or is born after years of struggle.
I am glad you were able to learn from others, I took the "years of struggle" approach :D
I like the idea of a possibilities mindset, and I think it is interesting to combine with something I call "psychological pyromania" which is imagining he worst case scenarios of an issue and then looking for ways out. Once finding a way out, I remove that as an option and look for another - rinse and repeat until I am stuck with no way out. It isn't pleasant, but it is calming to get to that endpoint and realize, *the worst case scenarios with no ways out are extremely rare.