I believe all efforts will be paid fully and maybe overflowed if not in this world, it would be in the next after spending our lives on earth. Nothing is wasted if its done for good.
Sometimes we could think we've done much but the reward is not what we expected.
But when it becomes a habit of helping and reaching out, we could no longer think of anything in return and this is the time we'll receive things/joys that we don't really expect, it will just come.
I agree. Sometimes unintended consequences end up being the best ones.