Tell you children every day that you love them and that they are wonderful. A positive mind, will reap positive results!
A parent has to set a good example, as well. Otherwise you are raising a total confused narcissistic entitled sociopath.
They also need to be corrected when they stray e.g. wonderful people say please and thank you; aren’t you wonderful? We have too many little narcissists running around. Catch them when they’re doing something positive before heaping on the praise; it will mean more to them because they will know it is sincere and true. ~ Constance Porter
The mind doesn’t know the difference from good and bad that is why we have to feed our youth with positive stuff not just tell them, they are wonderful. ~ José Tavares
Treating a person better than they treat you 
There will be haters & doubters in your life 
Be able to say no & mean it 