Does anyone have a personal toolkit of sorts for this type of decision making? Or a pointer to one. I don't mean books, but more of like book-distillates ore so

Does anyone have a personal toolkit of sorts for this type of decision making? Or a pointer to one. I don't mean books, but more of like book-distillates ore something. Heuristics that you use or flow chart-y type patterns which have served you well through the uncharted waters of life.