one of my favorite rory sutherland anecdotes is about how people complained that an elevator took too long to arrive. it would cost ~ a million dollars to make the elevators 5% faster. they solved the problem for ~$100 by adding mirrors so people groomed themselves while waiting
The most important food to constantly feed your brain is the problems you want it to be solving. These problems do not need to be grand like “solving world hunger.” Maybe one of your problems right now is what to get people for Christmas. You have to define clearly what those problems are and then constantly remind your brain to think about them.