O is for optimism. Believing you can do something and setting goals to get to it. Everyday offers us an opportunity for being optimistic. If it's a grey day outside, what can you do inside to be positive and uplifting?
Everyday you have two choices, be optimistic and find the positve in the things around you or be pessimistic and dwell on the negatives. It's your choice to make.
To have more happiness and to be self-satisfied. I propose you choose optimism daily. See if things don't look a little better.