Hey, I know how u feel, when i first started, I got so pissed cuz I could never get stoned, just keep at it and do it several days in a row, if you are doing it like once a month, u'll probably never get fucked up! I'm pretty sure u have to have at least SOME cannaboids in your system, just get them built up, smoke a lot of hash and u'll be fine forever pretty much.. unless maybe u don't get any for like 20 years lol