Maturity is the ability to control anger and settle differences without violence or destruction.
Maturity is patience.
It is the willingness to pass up immediate pleasure in favor of the long-term gain. Maturity is perseverance, the ability to sweat out a project or a situation in spite of heavy opposition and discouraging set-backs. Maturity is the capacity to face unpleasantness and frustration, discomfort and defeat, without complaint or collapse. Maturity is humility. Maturity is the ability to make a decision and stand by it.