How worried should i be about wpw?

Worried enough: Depends if you have WPW pattern or WPW syndrome. If you have symptomatic wpw, you should be worried enough to get it treated. Since you have the diagnosis, i assume you're been evaluated. You should follow the advice you've been given. Wpw has benign subsets and others who have an increased risk of sudden death. Your cardiologist can help determine what your risk is.