Whenever you're talking about your writing or anything you want to be doing more of - eating healthy or working out at the gym - watch for when you're about yo say, "I have to...", or "I need to...", and reframe the question for yourself to be actually more truthful to reality, which is to say, "I choose to..."
Don't wake up and say, "I have to write." Wake up and say, "I choose to write."