There are two ways to handle stuff. "essential" solving and tricks.
Tricks are many times short lived. Refreshing the essentialist fallacy (see post) that essential solutions are always the way. (grandma certaincy that if your first business failed you must turn into accountant or something.
Sometimes, the idea is to find more and new tricks. If one trick did his job for awhile and then stopped working, it is proof that tricks work (for while) and that one should simply look harder ad be more inventive in tricks. And fast switching between tricks.