And if you immediately put yourself in a different environment- the fog and tiredness will go away within 5 minutes.
But if it doesn’t suck, it’s not worth doing. Robert Greene explains in his book, Mastery, that you can learn to love this internal resistance. In his words, “You find a kind of perverse pleasure in moving past the pain this might bring.”
You need THAT insight. The one that leads to immediate action and makes immediate impact on what you’re trying to do.