Sanatan Dharma gives lots of emphasis on Selfless Service through Karma Yoga and Sewa.
Here are some Sloka from Bhagvad Geeta.
annād bhavanti bhūtāni
yajñād bhavati parjanyo
All living bodies subsist on food grains, which are produced from rains. Rains are produced by performance of yajña[sacrifice], and yajña is born of prescribed duties.
The science of transcendental knowledge has been imparted to you, O Arjuna. Now listen to the science of selfless service (Seva), endowed with which you will free yourself from all Karmic bondage, or sin.
No effort is ever lost in selfless service, and there is no adverse effect. Even a little practice of the discipline of selfless service protects one from the great fear of repeated birth and death.
A selfless worker has resolute determination for God-realization, but the desires of the one who works to enjoy the fruits of work are endless.
Karma-Yoga is the attaining through unselfish work of that freedom which is the goal of all human nature. Every selfish action, therefore, retards our reaching the goal, and every unselfish action takes us towards the goal; that is why the only definition that can be given of morality is this: That which is selfish is immoral, and that which is unselfish is moral.
"Sewa" is Sanskrit word that means selfless service - a unique concept of Service - Selfless Efforts for Welfare of All.
Youth in USA have an opportunity to work as summer intern with Sewa Internationl USA.
Yuva for Sewa is a summer internship offered by Sewa International USA that focuses on service projects in India and Caribbean countries. It is an opportunity for young adults to contribute their time to a larger movement of serving humanity.
Eligibility : Interns must (1) have graduated high school or be at least 18 years old at the start of the internship (2) be able to participate in the full ten-week internship program (3) be currently residing in US or Canada and (4) possess strong enthusiasm to make a difference.
Internship Duration : The internship will start Monday June 3rd and end on friday August 9th 2013.
Service Locations : India (Pune, Bhagyanagar (Hyderabad), and Bangalore)
“NAR SEWA NARAYAN SEWA” - “Serving Humanity is Serving God”.