What are the best ways to overcome mental roadblocks?

Some mental roadblocks are very common and have very simple solutions. One example I can think of is how people defeat themselves when they need a solution by using the words: ”I can’t find the solution.”

To overcome this block, you simply have to start the sentence differently: ”How can I find the solution?”

I can’t remember where I read about this. But the idea is simple: You’re either telling yourself that you have no solution and hence telling your brain to stop being creative by giving yourself that negative answer as an answer. Or else, you’re asking yourself a question that forces your brain to be creative and start problem solving. Putting yourself into a mind state that is searching and receptive to solutions.

A simple example: “I never pass my tests!”
Fixed: “How can I pass my tests?”

What are your thoughts on mental roadblocks and how to avoid them?
Do you know of any more?