I like to browse in occult bookshops if for no other reason than to refresh my commitment to science.
You find yourself refreshed in the presence of cheerful people. Why not make an honest effort to confer that pleasure on others? Half the battle is gained if you never allow yourself to say anything gloomy.
Those who labor unselfishly in behalf of others, with no thought of remuneration, will be physically and spiritually refreshed and renewed.
Some age. Others mature.
Rested, Refreshed, and Ready to run, the three Rs of peak performance.