If you want to make your day longer, go out and travel. Spend time with people who matter to you or meet new people. Feel the wind against your skin or hear the trees rustle. Go out and be in the hustle and bustle of the busy street. Be in the zone, do what you care about, and give birth to projects out in the world. Make ideas spread. Live and serve others.
Do you want to make your day shorter? Entertain yourself to death. Serve yourself.