How to change bad emotions?

Sometime, things do not happen as planned, I feel very bad about this. I always keep silent, I don't want to talk with anyone , and hid away from people. I hate this emotion, I try to  change my behaviour. I play sports , visit my friends to hang out , watch TV and so on . But it seems it doesn't work. There are moments find  peace whenever I am listening  to music. During old age , I really hope this situation will be better and hope be  happy every day. I remenber someone said "some people easily get something ,but some peole need to use their whole life if they want to get anything. Actually , the world is unfair. Right ?

You need to work a little harder and have much more practice. 

I have not highlighted corrections with colours/colors etc. It would make text unreadable there are so many corrections needed. You can compare your writing with whatever other people may write here.

Sometimes, nothing happens, but I feel very bad . Stays silent, I don't feel like talking to anyone, I hated this emotion, I try changing this by playing sports , visit my friends to hang out , watch TV and so on . But it seems doesn't work. At one moment , I can find the peace when I am listening  to music .With the age older , I really hope this situation will be better and hope happy every day .I remenber someone said : some people easily get something ,but some people need to use the whole life if they want to get it. Actually , the word is unfair.Right ?