With a genuine keenness or readiness to serve others, one can attain happiness in any group or community, and the eagerness to serve others will endow you with the power and skill necessary for the required service. Nowadays, we tend to regard it as derogatory to serve, but there is great worth in service.
Meat gives strength to the body, many people say... But the elephant - one of the biggest and strongest animals in the world - is a pure vegetarian.
The one who has deep knowledge of wide-ranging subjects has the capability to provide solutions to almost every problem. He has the intelligence required to understand the basic nature of the problem and then work accordingly towards finding its solution. He always gives right advice to the right people at the right time.

