Something important to remember is each person has a wide variation of what level of tolerance they experience. My boyfriend smokes as often as I do, and I've been smoking for about 5 more years than he has; he can hardly ever get stoned, while I get high every time.

If you're in the normal range, smoking for a while and taking a break for a day once in a while might make a small difference. If you find trouble with getting stoned, cut back to smoke about 3 days in a week, and take 4 off. It's much better when you can actually enjoy your high.