Optimism or Self-Deception?

How is it that I’m always surprised when I get a bad all-day migraine? Every migraine eases up eventually, so my optimism isn’t unfounded. But am I expecting the best or just denying reality?

Is self-deception always bad? I don’t keep a headache diary because it’s easier to revise history for the better without a written record. Hiding how I feel from friends often lets me conceal it from myself too. Shouldn’t I latch onto any method that makes my migraines and headaches better, mentally or otherwise? Or does burying the severity keep me from seeking adequate treatment or taking care of myself.

I’m asking a lot of questions with no idea how to respond. Have you found answers to any of these questions for yourself? Please help me out!