Also meditate upon this.  To possess
something means we must have
absolute control over it.  We cannot
even possess our own physical body
because we do not even have control
over our own physical death.  How can
we have control over anything or
possess anything else if we do not even
have full control of our own physical
body?  It is an illusion to think we can
possess something.

Another point is that the physical world
is impermanent.  We cannot even live
very long in a physical body.  When we
die, we (our souls or consciousness)
leave the physical world naked and
empty-handed, just as when we were
born (incarnated).  We cannot bring our
physical body with us either when we
die, so it was never ours to possess in
the first place.  Everything (material) is
just temporary, only for assisting our
higher and true purpose for living: for
the greater good and the evolution of
consciousness, when we choose to live
with Love and Selflessness (Heart)
every moment of our life.
ALL OF OUR TRUE POTENTIAL

Our souls or consciousness are
immortal but most of us choose to
focus on the physical world which is
impermanent.  We are what we think.  
So if we think we are just physical
beings with physical possessions then
we will only be that.  If we think we are
immortal souls in a physical body for
the purpose of evolving (expansion of
consciousness) then we have limitless
potential.