I went through a couple phases of clinical depression as a young man, and now that more than a decade has passed, I can't relate to that person who didn't have

I went through a couple phases of clinical depression as a young man, and now that more than a decade has passed, I can't relate to that person who didn't have the willpower to get out of bed for 6 months. Even though that person was me, it's hard to imagine now what that is like. But I can certainly sympathize.