Sadly, I can't. I've quit partaking in that about a month ago. I'm finally clean for the first time in 2+ years. Now I'm applying for a crapload of jobs. I don't really want to start up again, either.
Just don't get too heavily involved with it, and it's fine. The same goes for alcohol. The occasional drink is a-ok but if you become an alcoholic, your life goes down the shitter.