"Trust the training," says Mark Jeffery, a London-based former Army officer and Army tennis champion who is helping organize an online summit, "Winning Summit," which includes a Sept. 19 event for sports parents. https://earlybird.winningsummit.com/ Jeffery explains how sports kids can turn off their tendency to overthink and just go for it, or trust the training. His suggestions are based on his experiences as an Army officer in the UK.