Best advice given to me: "Don't think you'll never get addicted/fucked up by the drug, don't think you're smarter than everyone else when it comes to drugs, because thats what everyone once thought, and your case is no different."
Advice I give: "Don't ever touch anything unless you know what it is, what it does, and all the possible risks involved with its consumption"
Sadly, so many people don't get this advice. Pretty much every addict of any drug thought they were too smart to fall into a trap, and that attitude is just bullshit.
Also, I see so many people who don't know what the fuck they are doing with drugs, a girl once asked me if she should take her pill, I asked what it was and she said MD's.
I then asked her why wouldn't she, and she said "but what's MD's?"
She has had many pills in her life, and still has no idea what the hell MDMA is. Truly shocking.