Teach yourself and your children to be a 'thought gardener' in your lives by watching your own thinking.
Every time they may say 'I'm stupid, ugly, worried, afraid' have them note how it feels. Teach them to switch their thinking to 'I am beautiful, smart, confident etc.
Encourage them to always be the gardener watching their thoughts and model how you do this too.x
adapted from Storytime Yoga by Sydney Solis