You will make a lot of mistakes, but mostly they won't matter

 For the parents who spend a lot of time stressing over the mistakes they make raising their kids, Harvard University professor Arthur Brooks has some words of advice: Don't worry.

"You will make a lot of mistakes, but mostly they won't matter," Brooks, a social scientist and happiness researcher, writes in his newest book, "The Happiness Files," which published on August 12. Rather than spending time and energy stressing over every small parenting misstep, let the little things go — even if they feel big at the time — and focus more broadly on setting positives example for your kids and showing them unconditional love, he advises.

Harvard expert: Parents should worry less about making mistakes—‘mostly, they won’t matter’