Most Helpful Girl
Well to start, I find a healthy diet and exercise will help with that a ton. It's amazing how a poor diet and lack of activity can bring your mood down, and some psychologists will even prescribe this as "medicine" before they offer antidepressants.
Then, I'd make a list of things you enjoy or changes you want to make. Do you wish you spent more time with friends? Start reconnecting and going out more. Missing a romantic connection? Get out there and start dating. Need a new hobby? Pick one up. Tired of your job? Start job hunting.
Making a list of goals and checking them off your list will help to improve your outlook.
Most Helpful Guy
cheer up dude!!! do things that you like more!