I've been smoking several years, and I still get high at least 4 times a day. No problems with tolerance here.

I smoke more for medicinal purposes these days than anything else, but to intensify the effects a bit, here's what I do.. Alternate between smoking with a pipe, a bong, and a vaporizer. Also, have some schwag and some chron around, just to switch it up a bit. If you use the schwag when you're just sitting around, chilling, then you save the good shit for parties or going out.