These points will help you in the process of building confidence while raising kids:
Do not use harsh and rude criticism for others
Even when there is a competition, talk positive about the opponent
Praise your child, but within limit
Teach the child about kindness
Teach the child about donation and givings
Talk about strengths; give suggestions on weaknesses
Give them small tasks every now and then
Include them in discussions and listen to their suggestion
Teach them finance