Teach them to appreciate and applaud the efforts and achievements of others
Children who learn to admire and encourage other will be confident
They will be strong enough to give credit where credit is due
Teach your kids to give their best and never blame anyone when they lose
Teach them to be like Jonathan - could have been jealous of David but became his best friend - 1 Samuel 18
John the Baptist became lesser so Jesus could become greater - John 3:30
Be basically encouraging
Be your children's biggest fan
If you are fundamentally positive - when you give correction it will be received with thankfulness rather than discouragement
Some say - 5 compliments to overcome one criticism
Human nature flourishes on a diet of praise