A fatal injury

Sometimes, I really think that all my kindnesses are my fatal weakness. Well, why would I think so? I used to be a listener for most of my friends. Whenever they are sad, fed up or angry, they will share all their problems with me. I thought it's really nice if I can help them or listen to their difficulties. But recently I found that I'm too naive while I thought that way, eveything isn't as easy as I thought. I helped someone, but that someone brought difficulties for me. I was sobbing in my room for the whole night. Feel so helpless and sad that night. Alvin, you asked me right?? Sorry for not telling you and thanks for your comfort. =)