Worry, or Not, Worrywart?

A few years back, I was a darn worrywart. Somehow it just mattered to me how people felt cause well, to some extend you'll have certain feelings about things. I'm not talking about sixth sense or whatsoever. But with understanding, with the interaction, as time goes by, you'll sorta know how people are and what they feel when something happens. So when something does happen, you do know how the person feels. It's not really that difficult. Most of the time you just have to put yourself in the shoes of that person and imagine what happens if this thing is happening to you. But because I do that constantly, I'm easily affected by the people around me, especially my close friends. And the even bigger problem is, when I start worrying about something, I can't stop. There was once when an incident happened to one of my good friends when I was in Sec 3. The moment I saw my friend's face, I knew that which I suspected was true. And the helplessness I felt as I watched her cry is something I'll never forget. It wasn't something I could just tell her to 'Stop thinking about', and I wasn't the kind of person I am now. I was the happy-go-lucky-kind which still displayed whatever emotion she felt on her face and in her actions. But at that moment, I didn't know what kind of face to put on. I was all relieved and angry and worried at the same time. When she left, I was thrown into the depths of worry. But a common friend of ours came to me and told me 'Stop worrying about her. She's stronger than you think.' After that incident, I have never forgotten what this friend told me. And yes, I still worry a lot about the people around me, but I hide it. Cause I realised that it's even harder for you when you're in pain and people who you love worry about you, because worrying is also painful. So I wanna relieve everyone who I've cause worry, just leave me be in the silence until the pain is gone.