You’ll find more satisfaction in being generous and giving freely than from any other return on investment.
If you can find pleasure in sharing your gifts without expectation of a return, then the giving is the return in and of itself.
When kindness is offered freely, it can have a multiplying effect. To demand that someone return a favor produces hollow results and limits the likelihood that it will ever be done again (at least not genuinely).
Make being generous part of your nature – your default – and your life will be more fulfilling.