Usually, you have a choice. It's your choice.
Derek Halpern of Social Triggers talks about “giving” in his post How to Meet New People Who Want To Help Your Business and Career. Give more than you get, give before you get. But there’s some math in there that’s not so obvious. It’s a bit of a secret, but only a secret if you … don’t know how it works or haven’t experienced it for yourself. The math is extremely simple, but you have to be able to add. Check out the math–and the secret: The Secret Math of Generosity.