Realizing where I'm failing

Did an all class sparring session tonight save 10 minutes of forms at the end. After class I finally realized what I'm doing wrong. I kept believing that I'm too slow, which I can always improve my speed- but my problem is that I'm thinking too much! and over thinking everything. So my body might be fast- but there's that delay from my head to my body. I've been kind of thining that I've got that problem lately- but now I'm starting to understand how I can fix it.

It's kind of like back when I did quizzing, I knew that you should study a lot and at times I'd study for 5 hours a day, but it does you little good if you can't digest it all- or if you over do it. I don't think I'm working out too much- or going to class too much, but I think that when I spar, I'm thinking too much about what I'm going to do instead of seeing an opportunity and automatically taking it. Gotta keep it simple. Go back to the basics a bit. Choose some of my favorite moves and use them- but instead of thinking of 20 moves- keep to my basics and have maybe have 3 moves in hand. Practice makes perfect and this is no exception- I need to make my training instinct so I don't have to think so much while fighting.