It is said that every creature dies alone. Regardless of the path you choose, in death, there is nobody to hold your hand and help you through. You can be a doctor, saving lives all day and you can still die in a freak car accident. A drug lord, ruining lives instead of saving them can live happily to 70, and die of natural causes in his sleep. A judge, sentencing people to their doom, ending lives behind bars, fights cancer for 3 years and expires in his mansion, with noone but his servants for company.
It's irrelevant what happens during your lifetime. What you do, or do not do for others. The only thing that is important is that you make yourself happy. That the time you spend on this planet is not spent in regret. On a cosmic scale our time is very short. If serving others makes you happy, do it. If not, be your own boss.
Once you turn 18, you are in control of your own life. Not your parents, not your teachers, not your boss, you.
People spend their time pissed off, they argue, they cry, they're depressed, they are self conscious. That kind of weakness, the possibility of your emotions taking over every action and decision you make, that makes these people feel even worse about themselves, miserable, even. What they need is a wake-up call. One of those 4:30 am ones. The one that jolts you from one reality to the other.
The dream world, the one where everything is awful and bleak and everyone hates them, and reality, where everything is based soulely on your peception, which in turn is determined by your brain. You decide how bleak, depressing and dissapointing your life is. You decide how good it can be.
You're in control of your life.