Attitude is imprinted into your DNA.
Many of your attitudes, perceptions, and emotional responses are deeply ingrained in your cellular patterning. Your nerve cells store and retain accumulated memories of past and present emotionally charged events.
A joyful attitude slows down the aging process.
A study from Yale University found that older individuals with more positive self-perceptions of aging, measured up to 23 years earlier, lived 7.5 years longer than those with less positive self-perceptions of aging. These findings suggest that self-perception has a direct influence on longevity.
REFERENCES
Childre, Doc and Howard Martin. The HeartMathSolution. CA: Harper SF, 1999, pp 201-202
Stanislav V. Kasl, Longevity Increased by Positive Self-Perceptions of Aging. Journal of Personality and Social Psychology, 2002, Vol. 83, No. 2, 261–270, https://www.apa.org/pubs/journals/releases/psp-832261.pdf