Night is my alone time.

It's late at night again.  Mom's in bed.  My dog just jumped off the couch and went to bed on her own.  She does that sometimes.

Night time is usually my time, to think, be myself, and just be alone.  I've always needed time to be alone.  Even as a child, I sometimes sought out places to just be by myself.  I had friends, and I loved spending time with them, but I also wanted to just be by myself sometimes.

Without my alone time, I get grumpy and anxious.  I don't enjoy my time with other people, if I haven't had my alone time.

And there's nothing wrong with that.