Just quit smoking for one month. You have to let your seretonin levels get back up. Cannabis can deplete seretonin (cellls that tell you to be happy) especially in people who dont produce enough from the get go.
Since it takes THC 30 days to clear out of your system, just wait until it all clears. Sit back on that 30th day, ROLL A JOINT and get BLITZED!

P.S. The mind can be impaired up to 72 hours after the initial ingestion of THC. Just not impaired enough to feel. I thought that was a cool fact not that anyone cares.