1. Rid yourself of bad people.
2. Pay attention to your mental health.
3. Make time for your best friends.
4. Don't be afraid to ask.
5. Travel lots - and sometimes alone.
These are also some of the things that can lead you to a happy and fulfilling life.
Check the whole article here: http://www.huffingtonpost.com/sophie-hannah-davis/12-things-you-should-do-in-your-20s_b_10210758.html