If the whole existence is one, and if the existence goes on taking care of trees, of animals, of mountains, of oceans  from the smallest blade of grass to the biggest star  then it will take care of you too.Why be possessive? The possessiveness shows simply one thing  that you cannot trust existence. You have to arrange separate security for yourself, safety for yourself; you cannot trust existence. Non-possessiveness is basically trust in existence.There is no need to possess, because the whole is already ours.