Any really important advice for life in general?

I'm 15 years old, and I seek knowledge. I want to know what to avoid, what to do, what to look for. I don't want any of the ';Don't do drugs.'; or ';Use a condom';. I know all of that. Anything a bit more obscure I need to know?Any really important advice for life in general?
This is based on what I've been living in...:





1.Well, whatever you have felt from the experiences of life...whatever makes you sad, happy, bad, mad, feel as the COOLest guy ever in the school, cry, or even try to get OUT of the BOX...don't ever try to forget them all.





All the experiences, even the bitter one...could get us 2 b strong 2 face the next future. Just try to get it even more





2. The most important thing in a life is SELF-CONFIDENCE. You won't believe 2 anyone if you don't believe into yourself. The more you believe into yourself...the more people will take their respect and believe you..





3. Don't get your anger rises up or out of control! If it is, it just recognizes the way how to break, to walk forward caring nothing and burns everything after-just like fire! But try instead, 2 b a WATER. It effectively fills everything in, could transform in2 evrythg, but the main thg is....it doesn't change its characteristic itself - even a bit.





4. *phew* and at last....What does stop you from facing the life is not your dispirited-self, but a feel to give up. And what does make us go forward is not a hope, but a desire..Any really important advice for life in general?
don't do something if you think you'll regret it.
eat fast food and get laid dude!