How you spend your time could be the key to unlocking happiness.
1. Spend your time with the right people
People who spend time with other people tend to be happier, but equally important is with whom they spend time.
Still, since people have to spend time at work, they can benefit from developing friendly relationships at the office.
2. Spend your time on activities
What you do with your time is crucial in determining happiness. Working and commuting seem to make people the most unhappy while socializing is one of the best activities for increasing happiness levels. I usually watch TV and play my favorite games.
3. Expand your time
Since time is fixed, it helps to focus on the "here and now."
Having or perceiving that one has control over their time has been correlated to higher levels of happiness. Having spare time and perceiving control over how to spend that time (i.e. discretionary time) has been shown to have a strong and consistent effect on life satisfaction and happiness, even controlling for the actual amount of free time one has.