There’s a rule in writing for when you get stuck:
Just write the next sentence.
That’s all you have to do. Just write the next one.
After that sentence is complete, you write the one after that and you keep doing it until you’ve found your momentum again.
It’s easy to draw a blank or end up in despair about what to do, but if you’re willing to just worry about what to write in the very next sentence, you’ll make it.
If you’re stuck right now in life and lost your momentum, ask yourself: What is the next sentence?
That’s all you need to do next.