It’s just the way the universe works – if you take, take, take … you will have less. It’s also just the way the universe works – if you give, give, give … you will have more.
The kind of giving that brings you more, is higher-level giving; not giving to get, but giving as a release of your “loving to give” in the giving. With higher-level giving, there is no separation between the giver and the receiver because both get a benefit from it.
The flower loves to give it’s sweet nectar to the bee because it knows that the bee will reciprocate by aiding the flowers pollination process. The bee and the flower both benefit.
Try giving that way; you’ll like the results you get.