My Purpose in Life

I wonder why I'm living when I have something bad. However, I don't think too much, and I forget it easily. If I was asked what is my purpose in life, what would I say about it? I would say I want to make as many people as possible happy. when I do something good for someone, such as my parents and my friends, and they become happy, I will also feel happy. I think this is my purpose in life. In adition, it may not be my purpose, but I want to die without any regret. If I didn't think there was regret in my life when I was dead, I would be glad to live my own lifetime. I try to live my life hard to accomplish in my life.