Improve your state of mind.

Instructions

Acknowledge that you can make yourself feel good immediately.
Dispel the belief that you need external factors to feel happy.
Experiment with changing your physiology.
For example, when you feel sad, try smiling for no reason.
Experiment with submodalities.
Think of a memory that bothers you and play around with it by changing aspects such as color.
Plan your days in a way that makes them pleasurable.
Add activities to your day that make you feel good, such as playing an instrument or reading a book.