Earlier quoted context omitted.
But kids are going to have setbacks, they will reach a plateau in their craft (music, painting, art, sport, ...). You need also as a good parent to help your kids go through, to not give up, because even joy to do is not always enough. This is the hard part. From my modest experience of being a ski/snowboard instructor and trying to raise 3 boys (now 12, 16 and 18).
why does a child need to break through a plateau at anything? Of my five sample size of five, expose them and support them, some things can’t even hook you until your brain grows enough .. The musical one is in a band now the nerdy one likes inhaling solder. I did force both boys to Hockey but just to have passable skills so that he can enjoy that all that comes with the sport as an adult
Learning that they can hit a plateau and move beyond it with concerted effort is super important. After you've done it once, you can look back on that experience for inspiration when there's a plateau that you want/need to move beyond.
Having experience with struggling with something that is easy for some others is important too. Some kids are just naturally good at a lot of things when they're younger; which is nice in some ways, but makes it hard to learn skills to deal with challenges... It's great when they find something that challenges them (even if it doesn't seem great to them in the moment). Other kids have a hard time with most things; you've got to look out for things they can be good at.