Let me say something about happy life.

First,I think that it's important to develope your hobby.For example,if you enjoy singing very much,you could practice singing everyday to relax yourself.You can also play computer games,play soccer,play basketball and so on.Why don't you have a try?

Second,you shouldn't always think about something sad.If you failed in an exam recently,you shouldn't pay too much attention to your mark.

Finally,it's really important to talk with your parents and friends often.You can share your happiness and memory with them.The more you share with others,the happire you will be.

Hope you have a happy and colorful life.