Have you ever had a day? Just a day, not good - or bad?

Today and some days are just a day. Not good, not bad. Nothing good or bad happens, its just my mindset. I call it 'getting stuck in my own head' and it happens to me occasionally. On days like this, I have to constantly remind myself that I have a good - no, a GREAT life. There is not much that I need or should long for. I could detail the pros, which vastly outweigh the cons, but I won't.