Something tells me you people dont actually understand what a life philosophy is. This is going to sound pretentious (probably because it is) but if you can sum your philosophy up in a custsey poo catch phrase you may want to go back to the drawing board and think on it a little more.
My personal philosophy really revolves around some of the ideas put forth by the Greek philosopher Epicurus, though watered down quite a bit. The utmost goal in life is to seek pleasure, but excess of pleasure can be unbalancing and lead to displeasure, so it is important to live ones life pleasurably, but with an eye towards moderation.
I am also straight edge, for several reasons. As mentioned above, alcohol and drugs tend to lead to excess, which brings with it ultimate displeasure. But I also have a strong philosophy of self control, and anything that removes my wits is ultimately a bad thing.
These are but a fraction of the philosophies I live by. And I think if you really think about it, you will find you have far more meaningful ideas then "do what you wanna do, be who you wanna be." - Which is really, in essence, a completely meaningless statement.