There's a nice quote about this in Neil Gaiman's Sandman comics https://i.pinimg.com/originals/e2/bc/96/e2bc964c94ddefc86a99...
A serious answer from me would be how to ask for help when stuck on a problem or understanding a topic. A lot of students (me included) will leave school with the impression that it's always better to grind through and figure things out oneself, and that asking for help is a sign of failure.