Some people will tell you that's when they're most inspired. They're full of it.
Some people will tell you that's when you need to buckle down and work through it. They're psychotic.
Others might tell you to take a break, and when you least expect it, it'll hit you like a ton of bricks duct taped to a lightning bolt. Wishful thinking, mostly.
Mostly, there's not a damn thing you can do about it.
So why write this? Why even bring it up?
Because sometimes we all need to be reminded that it's not the end of the world. If you can't accomplish something, you don't need to hope for a miracle. Sometimes you just can't make it. It all works itself out eventually. That isn't to say don't -try-. You'll never do anything if you don't put a little effort, but remember - even at a professional level, this shouldn't be stressful for you in the same way a job at a bank or some other day to day grind would be. You chose this path because it was something you wanted.
That is to say