The secret of health for both mind and body is not to mourn for the past, worry about the future, or anticipate troubles, but to live in the present moment wisely and earnestly.

Buddha (c.563-483 BC) Indian mystic, philosopher [b. Siddharta Gautama]

In Bukkyõ Dendõ Kyõkai, The Teaching of Buddha (1966)

Likely a paraphrase of a variety of the Buddha's teachings.