Super reminds us that the main philosophy of Dragon Ball is there's always someone better.

>Raditz was better than Goku and Piccolo
>Nappa was better than Raditz
>Vegeta was better than Nappa
>Ginyu was better than Vegeta
>Freeza was better than Ginyu
>Cell was better than Freeza
>Majin Buu was better than Freeza and Cell
>Beerus was better than Freeza, Cell, and Majin Buu
>Jiren was better than Beerus

It's about overcoming any problem by pushing your limits, never giving up, staying positive, taking your anger and channeling it into something positive.