Exactly in your situation mate; use to take a small rip from a bong and be insanely off my mind, now I smoke 4-5 bongs to get a good high, and these good high's I aspire for never are as ecstatic as when I first started.

I can tell you this though mate; if you want a more 'different' high try smoking up after a workout, or even a power set of pushups, the high is usually more intense at the start, but don't do it while you''re high, I seem to lose my buzz quicker.

It's also always good to smoke up after a long tiring day at work, arriving home feeling heaps tired, the high for me is a big body high, and usually crash at some point lol

Best of all; get high when you're nice and warm, like cheeks rosey red, usually more intense

FYI: I just got home from work, VERY tired, and cosy warm inside.... Ready to smoke, and got Aqua Teen movie in the 360 lol