Hi there. My son and I both have LQT3. We both have ICD’s as we were both symptomatic. It has been 10 years since our diagnosis. The early years were rough. High anxiety and little sleep because of all the unknowns. He was 12 at the time of his diagnosis. Once you have a treatment plan that best suits you, things will calm down and the anxiety will eventually subside. Allow the emotions. It’s a process.