Contrary to popular belief, being compassionate will actually benefit you more than others. It will erode the edges of your ego and make you feel good. Furthermore, when you extend compassion to those around you, it becomes very easy to win them over, especially in tense situations. This will make it far more likely for them to help you out and do you favors.
Make a conscious effort to be nice every day
Show compassion through all your actions.
Make eye contact and smile at people
These short, positive interactions will keep you feeling happier throughout the day.
Stay away from gossip and avoid complaining
Avoid topics that stir up negative emotions in you.
Reflect truthfully on your conflicts
How did you handle yourself? Could you have acted better?