Mantra is very powerful healing and mantra for Good Health. Dhanvantari is accepted as god of Ayurveda i.e. ancient medicine science. It deals with matters relating to health, day-to-day life and longevity (long life).
Real Happiness comes from within. One cannot get the same from material things. Chant the Mantra after knowing the meaning i.e. I am one with Divine Happiness, the Vishnu and live in the present moment.