In the hopefully many years of my life, what will I think about? What will I remember? How much will this one day at that one corporate job weigh in my thoughts? Will it weigh more than thoughts of my friends, family, hobbies...? Probably not.
So while I live in this moment right now, I need to remember those 8 hours I just spent sitting in my poorly lit cubical replying all to endless emails aren't that frustrating, they're not that hard, it's not that bad. It's a drop in the bucket of my life.