Our kids have not hit puberty but I think they are on the right track.
A big part of this is filling their time with endeavors they enjoy. Sports in particular are a big part of their life. They have been set on a path that they could be pros and make a career out of it shoukd they choose to and if injuries dont grt in the way.
You will be surprised how quickly tv and screen time goes away when the entire family is busy. There is no downtime during the week except when perhaps commuting - otherwise its light play with toys.
When other parents hear about our kids demanding schedules and training regimes, some are shocked. But we were also kids. We were full of energy. Kids love running. kids love learning, coaches , teammates, nownfriends. Its that or screentime.
Of course, this demands high sacrifice from parents. Its expensive. Its busy. You have to have nannies to shuttle kids from school to training or else have a renote job that allows you to commute midday.
Its work. Its not for everyone. There is no secret sauce. Just work, looking around, and knowing at the end of The day having the satisfaction that your kids are turning out quite alright. Then starting the next day, knowing that the weakest in this balancing act is you, the parent... not the kids who dont complain and are all smiles.