Age is such a potent marker that whatever happens to our minds and bodies in later life, we assume it to be the result of advancing years. If older people do anything the least bit unusual, we label it eccentricity or senility, even if they have been doing the same thing all their lives. Within such constricting mindsets, tight as an undersized suit of armor, growth, flexiblility, and new enterprise become impossible. Not only the quality but the length of our lives may be affected.
--Ellen J. Langer, Mindfulness