[16]boy2become serious about SOMEthing rather than loaf`all day

At 8, he likes loafing. He does do his homework on his own, read some English fictions. When asked he does practice a bit of piano. He does enjoy running and play with his friends downstairs. But what I hate to see is him loafing — TV, phone games, lying on sofa…

(Watching stuff on computer is slight better as it requires a bit of intelligence.)

Q: he seems to need a lot of guidance and control. What if I get sick or pass away early?

Q: At what age do I need to get him to be serious about some self-improvement. Consider burning/rotting.
A: Trevor Tang said 11 or 12.

–Investing?

–game programming (including debugging)?

–various sports
But can he practice that without parents? Yes for badminton