Cannabis, also commonly known as marijuana, is a naturally occuring plant that is used recreationally for its psychoactive effects. It is either smoked, vaporized, or eaten as "edibles".
Some common effects of cannabis include
The good news is that cannabis will not kill you. It would take inhaling multiple pounds of it at once to even approach lethal limits. Despite that, frequent use of cannabis can still lead to heightened anxiety, paranoia, and psychosis. Frequent use can also lead to a condition of excess vomitting.
First, find yourself a safe, comfortable setting. Don't smoke on the job, especially if it requires you to operate heavy machinery.
It's best you use at a place you're familiar with, such as your own or a friend's place.
Second, measure and track your doses. Doing this will help you understand your use pattern.