Emotions

I am a very emotional person. I dont have to know the person, but if I see someone crying like 60% of the time I might start crying too, and pretty much 100% of the time if I do know the person. I havent quite figured out a way to control it, I just start crying even when I dont want to. Take tonight, I watched our recordings of the last 2 Deadliest Catch shows tonight and I bawled my eyes out when Phil Harris had his stroke. I dont know him, but I was still so devistated that I'm tearing up as I write this. I definitely need to get stronger emotionally if I'm gonna handle my chosen profession. I'm gonna have to be around people that are having a hard time and I'm gonna have to be strong. But how on earth do you check your emotions? How am I supposed to know when I'm being too caring for my patients? Guess I'm just gonna have to find out.