You may have noticed this about yourself: when you are feeling pleasant, you want to expand; when you are fearful, you want to contract. Try this. Sit for a few minutes in front of a plant or tree. Remind yourself that you are inhaling what the tree is exhaling, and exhaling what the tree is inhaling. Even if you are not yet experientially aware of it, establish a psychological connection with the plant. You could repeat this several times a day. After a few days, you will start connecting with everything around you differently. You won’t limit yourself to a tree.
