This very prana, the very life breath that is going inside your body through the air you breathe itself is not your property. It is the property of Existence. Your very life is a sheer gift to you from Existence.
When you realize this, you will immediately see that all your fears and worries and greed are so baseless; you are running behind something thinking it is yours but of what relevance are these really? When your very life is a gift to you, how can you claim anything else is your possession?
One more thing: real knowledge comes by experience, not through words just by talking about it.
Let me tell you, the moment you imbibe a single point of truth or any single dimension of truth in any way, if you catch a single idea and imbibe it honestly, truthfully, it can do wonders.