Pay it forward, because it will always come back in the end.
As to what will be reciprocated, that is your own choice.
Every so often, I hear from people who feel belittled or ignored just for being their genuine selves. Kindness gets taken for granted or even trampled on, and they feel like everyday is a struggle just to be who they are and not who they should pretend to be.
If this describes you, I just want to say... you may not know this yet, but sometime in the not-so-distant future, you will become the "good egg" that people aspire to be.
And don't think of it as a struggle, because if something comes naturally to you, lifts your spirit and makes even just one other person happy, then embrace it -- it will hug you back. 😊