Reason behind your good confidence

Here i want you all people to share why they are confident in anything they do. You may be confident because of you good grown in good environment.

If you are aware about reason about your good confidence please share with me.

What is the different reason to be confident?

I am asking you these quesitons because, very scared of different useless things. So i want to overcome my weakness. One of my weakness is confidence. So good or bad ideas are welcome.Have a nice day.

Cheers

Ranvir