The zest for life keeps person young by Madhuri Nadig (DIYA for the globe). 

It is not possible to reverse the age, but the zest for life can keep a person young all the time. For this purpose, the mind should be engaged in positive thinking. Since the mind and body are interrelated, activities of the mind influence the body and vice versa. As the body grows older, if the mind also thinks that it is getting older, then the person would undoubtedly age faster. However, the mind can remain young.... (from Akhand Jyoti English March-April 2020)