Deploy compassion toward yourself. Like empathy. Understand yourself more. And appreciate your effort instead of beating yourself up. You know, when we get reward after doing something great, parts of our mind that have been asleep for years start waking up and attacking us vigorously, because they hate us, and our frontal lobe is still too busy to fight back, because it’s still processing what has transpired (in order to come up with new ideas and not repeat itself next time you attempt to write). Just hang in there until this period is over. Euphoria kicks in eventually after it passes.