Treat the question you’re trying to solve as an answer, figure out what question it answers, find other ways to answer it.
When you’re stuck on a problem, and in a rut trying to answer a question - change that question into the form of an answer, then ask yourself what question that answer is for, then consider other possible answers to that question.
Example
Original Quesiton:
How do I find a spouse?
Question as an answer:
I find a spouse.
What question is that an answer to?
How do I feel more companionship?
Alternative answers:
Sure, a spouse would work. But also a satisfying close personal friendship. Perhaps a pet?
This is essentially a cousin exercise of the 5 Whys.