The art of doing what one deems "chill". The definition may vary from person to person but the general idea is for a person t reach an ideal level of satisfaction in all areas of life. Unlike other ways of living, chillinism does not require a person to reach any pre-set goals or be an active member in society. You achieve chilinism when you see fit. Not a soul on earth can tell you otherwise. It's funny how hard people try when they know that an inevitable end awaits them. Chillinsim strictly believes in making ones time alive as "utopian-like" as possible.
The purpose of practicing can simply be deduced to: inflicting as little possible anxiety in life.
"I'm very tired today, but I have class at 9 (what do I REALLY want to do to make myself happy. A: Wake up go to class and not fall behind. B: stay in bed wake up at 2 and feel rested, although i am now a days behind on work."
The answer is literally, whatever will please you in the long run. Chillinism is an art similar to meditation, but requires effort only you can measure.
Hanging out at the beach with a false sense of entitlement and accomplishment attributed to one's own life which allows one to enjoy the beach and honestly feel that one deserves to be out there, all while having a falsely inflated ego leading one to believe that they are the "F"ing man!