HowIQuitSmokingPot.com This is Day 12 of my personal journey of quitting use of marijuana, aka "The Evil Weed". Even though I am a big proponent of the use of medical marijuana for some people and I suffer from constant pain due to herniated discs in my neck, I have learned (after 30 years of smoking pot), that I know no moderation and cannot use pot and function at peak performance.