Schnitker and Emmons (2007) found evidence for an inverse relationship between patience and negative affect and between patience and depression, but a positive relationship between patience and self-reports of certain negative health outcomes, including headaches, acne, and ulcers.
They found that trait stability increased from a correlation .31 in childhood to .54 during the college years, to .64 at age 30, and then it reached a plateau around .74 between the from age 50 until the age of 70. What we can infer from these results is that personality seems to stabilize with increasing age.
Yet inappropriate anger, impulsiveness and frequent mood swings may push others away, even though you want to have loving and lasting relationships. Borderline personality disorder usually begins by early adulthood. The condition seems to be worse in young adulthood and may gradually get better with age.