You are the endless sea
In whom all the worlds like waves
Naturally rise and fall.
You have nothing to win,
Nothing to lose.
You are pure awareness,
You and the world are one.
So who are you to think
You can hold on to it,
Or let it go?
How could you!
-- Ashtavakra Gita 15: 11-12
"... You have nothing to win, nothing to lose ..."
Can you even imagine such a concept? You do not need to compete with your neighbor. No need to grab your piece of the pie before its all gone. Fear need not be the motivating emotion, and it can be replaced by compassion and acceptance.
"... You and the world are one ..."
Why would you compete with yourself? Why would you want to take what is already yours? You must see the truth of this. We are not separate individuals, nor are we separate from our environment. We are an integral part of the flow that is life itself.
These really are not "concepts", since conceptual thinking (and words themselves) imply the world of duality. Try to experience these realities, by living your life as if they are true. See if they don't resonate with something deep inside of you. What's the worst that could happen? You would be living more "gently" with your neighbors, and with the world itself.