I'm with you on having a clear mind. A mind cluttered with negative thoughts will make you feel sick. I like to keep my mind clear when I go to sleep in order to get good quality sleep and wake up feeling refreshed and animated. (Or at least I try to keep it clear.)
Other things that make me happy is when I see some kind of communion and understanding between different people, rather than seeing hate, divide and violence between them over trivial small nothings like skin color or speaking another language, despite being on the Carlin side of this subject were I've quit on having hope permanently, I do still like to see things like this because it makes me smile.
I like long summer sunny days and iced cold coffee.
I like Halloween and watching cheesy horror movies.
I love cats and igaff if someone labels me "crazy cat lady" over it. I still love them because they make me smile. :>
I like hearing and watching the ocean waves
and I like imaging that I live in a place full of wide open fields and lots of trees and flowers.
These are the things that make me happy.