Happiness and Positivity
#2 Happiness
Just be happy. Smile no matter what the situation is. Pick up the little things. It's good weather today, I've have good friends, whatever. Know what you have.
#3 Positivity
Just be positive. Being negative achieves nothing. Crush that inner demon. Don't complain - why increase the pain? Just let go, let it be, and move on. Go with the flow. Like a leaf, if it clings to a rock in a river, the force will be against. However if the leaf just let go and go with the river, the power of the current will be yours.
You don't have to choose to have a negative life. Life is what you make of it. It's your penny. Don't keep doing the things you hate.
If it gets boring, change something.