Go outside, out in nature is the most pleasant place to be:)
Depending on what you may be smoking... Music seems to be a good option.
Well I don't know about your type of music but personally I like some Pink Floyd or Electric Moon ( http://www.youtube.com/watch?v=4SA0Aa54-tQ&feature=related )
It's all a matter of personal preference ;)
learn to quit :)
please don't :(