I never had that problem..but can recommend Polya's unique How To Solve It, which deserves its high reputation, and might be helpful.
But which particular domain(s) are you talking about?
But which particular domain(s) are you talking about?
Not any specific domain but I was mainly looking for ideas/perspectives on how people think about and approach problems in general. This would be useful for me when I am on to something new (at least for me) and test out different approaches when I hit the wall or feel stuck.