Distances & Responsibilities

Being an adult should be a proud thing.
But it is not true.
When you finally grow up enough to be an adult, you are going to say goodbye forever to those fairy tale days.
Instead, you are facing a lot of heavy tasks, especially for the jobs I'll hold.
Actually, everyday I gotta face a bunch of problems about dealing with the distances for human relationship and the life-related responsibilities.
Yeah, I'm not REALLY old enough to face with the saving-life matters, but being a college student---especially a med one, I work hard but still don't get the essence of keeping the RIGHT distances with people around me.
Sometimes, I feel that I'm quite a popular hotshot.
But in most of the cases, I don't really get into the situation, which disables me to seek the pathway into human beings---I don't get WHAT THEY ARE THINKING ABOUT.
I make friends, but quite few real ones.
When I start to think about all this, I almost go nuts.
How close should we be? To what degree of alert should I keep?
What I should be careful for, others' interaction matters or the affections and trust for that person?
Maybe I never believe people, and I try to do the reverse.
I wish and I will get hurt some other time.
Everybody NEEDS to get hurt for some degree, so that he can live a relatively longer and happier life.
But here, I hope I don't get hurt from those close friends of mine, and this is not possible.
"I drew a line and wish that nobody will pass through, but that is only a minor wish not long before the day that people break through it."