Tweet from Penny Oleksiak

"I just googled ‘Canada’s most decorated Olympian’ and my name came up. I want to thank that teacher in high school who told me to stop swimming to focus on school (because) swimming wouldn’t get me anywhere. This is what dreams are made of," she tweeted.

Most of my teachers saw the vision and pushed me towards it. But that one who constantly dragged me down though,, WOAT (Worst of All-Time)."

How do you create a mindset strong enough to overcome the negative comments from "people who matter"?