The way I see it, there are two primary ways we grow as people: love and discipline. When people show us love growing up and throughout life, it has a positive effect on our minds, bodies, and spirits. The problem is we cannot control the love we experience from other people. That is on them—but we can always control discipline. As a result, discipline, to my mind, is the surest way to develop as a person.
Walk In Integrity
For more, see Toughness Is The Ability To Go Without.