Self-Love
To really know love, you must first of all know yourself. By
yourself, I don't mean the "I"; I mean you must know
your being, who you are separate from your label, from your name,
from the feelings you have acquired throughout the years along
with your self-image, and the other ideas you have about yourself.
To know yourself is to know who you are beyond those feelings
and ideas. Who you really are has nothing to do with what happened
to you in the past, and who you are exists regardless of your
feelings, thoughts and opinions about yourself and regardless
of anyone else's opinion about you. You must first know this if
you are to know love. When I talk about "knowing yourself,"
I mean to know your being, your Essence. (Diamond Heart Book 2,
pg 154)

Love and oneself
A person who really loves himself likes doing what he has to
do. It doesn't matter what it is. The liking and the enjoyment
have nothing to do with the external activity. It has to do with
accepting yourself. So it doesn't matter what you do... Your external
activity should not make any difference at all to your happiness.
If it does make a difference, you're obviously identified with
something that is not you. When you see that it doesn't really
make a difference, you won't always be anxious to get things over
with, or anxious about what is going to happen. The attention
and anxiety will not be there, because there is no reason for
it. (Diamond Heart Book 3, pg 86)