There is quite a feeling of fulfillment seeing others happy. Just by doing something small, can have a profound impact on a day, or even in some cases, a life. The look of joy on someones face because of an act or gesture – that is true happiness. That goes both ways, for the giver and receiver.
I believe that to find happiness for yourself, you need too reciprocate with others. Helping with a task, giving an unexpected gift, donating, or even just striking up a conversation with a stranger, are ways to achieve this. Having an impact on ones life in this way can be the start to the path of change, and maybe even inspire them to bring happiness to others.
Small, consistent changes inside all of us is what is going to bring people closer to happiness. Change is hard, but the more its practiced, the easier it gets.