Jai Srimannarayana!
We want life to be active and body to be energetic. Help is an activity where a person having something shares with others with compassion. Seva or Service - 'It's not about whether you have it or not - If you do it you feel joy, you feel happy. That's service.'
We are doing service for OUR SAKE. The world we live in is supported by a power called Isha. This controlling power is in me, you and in everything. You enjoy, but remember that some power is giving you that energy. Isha is one and we are several parts of it.
Service makes us feel happy by doing something. Everything in universe if for other's sake. Remove pain from other person. Person with tender heart won't tolerate when other people suffering and joyful when other people are happy. It's even better, if you have a desire to eliminate the sorrow from other person.
Service is for self satisfaction, for self joy, showing gratitude to God. Help is for other's satisfaction. What's needed is Sankalpa. It's up to us to do that. The more you do the rewards follow on their own. Service is rendered by heart, by feeling.
Start sharing things with others without expecting anything in return. Disappointment will follow, if you start expecting from others. Without expectation we always feel happy.
God has given this great opportunity. Serve all beings as service to God.
Jai Srimannarayana!