Most of the difficult problems we face can often be solved if we take a creative or unconventional approach.
But some of the problems will stick with us, bug us, annoy us and eat away at us. They’re unsolvable.
This isn’t to say that you shouldn’t work on them anyway but simply that you should accept that the progress will be slow and that you might not be the one who finishes the journey.
Do as much as you can, and trust that someone better suited (for whatever reason) can pick your work exactly where you left it, improve it, and build upon it.