I've found I get pretty damned stoned twice a day if I do the following. Last night I did a shit ton of yard work and house cleaning, ate a solid meal, sat back watched a concert and took 3 pulls from my bong and was lit. I puffed one more time before heading to bed. Woke up rather early, put on another concert, puffed 3 pulls and was lit, fell back asleep and woke up feeling wonderful. Now I'm at work, don't feel burned out.
I still buy way more weed than I need and now that I've tried to smoke less, I enjoy it more and have less worry about my supply running low. Less is more. Sure I'd love to be able to get stoned all day, but that's just a waste. You lose appreciation for the plant. It's good when super dank weed only gets you slightly buzzed. Put that shit away and take a day off. Does wonders.
Also if you're taking other drugs that can effect your high. I found that at one time MXE and weed was a great combo. Now my tolerance to MXE is so high that after a binge, I can't get stoned for a day or two after. So I've decided to quit wasting my money on shit that is basically wasting my weed.