Modesty is not a vice, but excessive shyness can interfere with your personal life and career.
Fix your strengths
Another list that will help you in the battle with constraint, should touch on your positive qualities. Merciless fight with it, reminding yourself of your own splendor (this is not a joke).
Practice
Skills need to be honed, and habits that prevent living should be systematically eradicated. All this applies to sociability and shyness. Here are a few ideas that you can use as a kind of training.
Focus on others
The problem of shy people is that they think too much about themselves and about the impression they will make on others. Try to redirect the flow of thoughts from yourself to others. Be interested, ask, empathize. When you are focused on another person, the anxiety about one's own behavior goes to the background.