The bottleneck in problem-solving is usually the framing, not the effort. How you represent a problem decides which moves you can even make, and many 'hard' problems become easy under a different representation. In a famous study, patients redesigning their hospital experience photographed the ceiling tiles, because lying on a gurney, that was their actual view. The reframe revealed a blind spot every designer had missed.
A few reframing techniques recur. First-principles thinking strips a problem down to basic truths and rebuilds, deliberately dropping inherited industry assumptions. A pre-mortem imagines the project has already failed and works backward. It surfaces more concerns than 'what could go wrong?' Before committing, ask what frame you are using and what other frames were available. See Problem Solving.