Grown up people are able to wait.
Maturity is the ability to stick with a project or a situation until it is finished.
The person Who is constantly changing jobs, changing mates and changing friends is immature. Everything seems to turn sour after a while. Maturity is the ability to face unpleasantness, frustration, discomfort and defeat without complaining or collapse. The mature person knows he or she can't have everything his or her own way. Maturity means doing what is expected of you, and this means being dependable.