Asteya means not stealing in sanskrit and is the third Yama (social code) on the eight fold path of Astanga yoga. Non stealing means to not take that which does not belong to you and to show honesty.
If you do not have something then it means you are not supposed to have it yet. So the universe is trying to teach you patience, and one can come out of their ignorance and hear this subtle lesson. This will allow you to think differently about what is important and what you really need in life, ultimately making a better you.