Such people have strong self control over their emotions and often they are disciplined towards other things also.
One of my friends is like this. He does all the household chores by himself, completes his day job with efficiency and also has time for himself.
He works on side hustles in free time and sometimes gamble within his limits from the extra income he earns from his side hustles.
He is quite a motivation for me and I have myself developed a lot of self-control by seeing him.
The way you put it is Impressive because it can be the motivation and incentive for anyone, your friend is a clear demonstration that things can be done well and Efficiently , Apart from having fun, although I suppose he is single, when you have a wife and children the only way you can have that time is if you have too much money to devote to the things you really need.