How many people you know are really happy and enjoy life to the fullest? Probably not that much.
Do these same not so happy and quite boring people give you advice? All the time.
And why would you listen? If you apply the same recipe, you'll end up with the same meal.
Each time someone gives you a piece of advice, always ask yourself how great is that person really doing in that specific field and in her life in general; especially if you didn't ask for her opinion in the first place.
Common knowledge and social norms are worth challenging and never, ever do something because "everybody is doing it" - that's the lamest excuse and an insult to your own sound judgment. It has been used to justify anything from genocides to looting and riots - even bureaucracy.
Do something because you believe it is right; not because everyone else is doing it.
Always be wary of crowd movements. When a herd moves, it generally is toward the slaughterhouse.
Blaze your own path. Walk the other way.
The price of being a sheep is boredom. The price of being a wolf is loneliness. Chose one or the other with great care.