Maturity is the ability to control anger and settle differences without violence or destruction. The mature person can face unpleasantness, frustration, discomfort and defeat without collapsing or complaining. Maturity is humility. Maturity is the ability to live up to your responsibilities, and this means being dependable. It means keeping your word.
Dependability is the hallmark of integrity.
Unfortunately, the world is filled with people who cannot be counted on. When you need them most, they are among the missing. They never seem to come through in the clutches. They break promises and substitute alibis for performance. They show up late or not at all.