We must have unconditional loving kindness towards ourselves before we can genuinely feel it towards others.
Give up our artificial, tiresome lives and live naturally; live the way a tree lives its life.
Empty your mind of concepts, desires and judgements, thus you can attain a state of childlike simplicity. When we embrace all things there is no anger, no self, no other. Sincerity is fundamental in forming proper relationships. You also need to be consistent and persevering in your actions.