Got any game-changing tips for handling stress and keeping a good work-life balance as a founder?

I am not a founder but for almost 12 years is HR and work-life balance have always been my number one priority for all my stakeholders in the business. My priorities: 1. setting goals and working hard while achieving them but when the goal is achieved, you deserve a break (chill weekend with friends or family, short city break or just something to celebrate the achievement). 2. time management 3. sport (tennis for me). My brain is switched and I am focusing only on the yellow balls that are flying around.