It is great that you sing. I've heard there was a study that found people who sing had higher releases of hormones that make you feel good. It is also supposed to improve cognition. What is your favorite type of music?
i like hip hop  music and RnBs
Ah, interesting. I think RnB is considered one of the more difficult styles of singing, since it usually includes wide ranges and complicated melodies. Do you ever sing at events or around people, or is it something you just do for yourself?
not in events but for fun
Do you find you sing mostly by yourself? I know a lot of singers have troubles with the confidence it takes to sing in front of others. Also, singing in a new place in front of new people can be a little frightening
i am very confident i dont blush at all
That is good for you! Blushing can be very intense for some people. It is so interesting how emotional stress can cause a persons sympathetic nervous system to open wide the blood vessels. Where do you think you learned your confidence?
i learnt to be confident since i was a kid. Gradually it has been part of me
That is an ideal time to really adopt confidence into your life. Did you grow up doing a lot of activities / hobbies as a child? A lot of children build confidence that way.  
of course yes, singing was part of my hobbies