They never really grow from egocentricity to a consideration of others. When things do not go their way they react in some infantile way, such as by crying, pouting, pitying themselves, throwing a temper tantrum or even throwing objects near at hand. They may try to attract attention to themselves by boasting of their accomplishments or criticizing others. Likewise, an emotionally immature man and an emotionally immature woman who have become united in marriage are sure to undergo conflicts. One of the greatest needs for stable and successful marriages is maturity.
Maturity is basically unselfishness.
Since no one is perfectly mature, it becomes obvious that maturity is a relative term rather than an absolute one. In fact, maturity is a process rather than a fixed condition. A certain degree of emotional maturity is possible even for unbelievers, since the sin nature has areas of strength as well as areas of weakness. They may be extremely gracious and kind toward neighbors, business associates, or people in the community. They may show great compassion toward the needy and underprivileged.