Your experience will be mainly dictated by your setting. If you're comfortable chances are you will have a good time, even if you felt like shit before.

If you want a bad trip, just hang out with people you don't trust, in a place you don't know with lots of loud noises. A stressed person with a tendancy to freak out is not suited for hallucinagens.

Heh as far as "accepting" the trip that can actually help a lot. Just relax and don't fight the experience. I learned that on salvia.

The beauty of this is that it can apply in normal day to day life.