Answer:
You stop doing weed lol
Explanation:
It's not as easy as saying "Stop doing weed" or "I'm gonna stop doing weed" you have to constantly fight the urge to not reach for that weed and to say "Never again". U should never start, but yea. U can't get it out of your system until your body "flushes" it out of your system on it's own. Good luck to whoever it is! (: