For this topic I refer you to a poem by Diane Wakoski called "I have had to learn to live with my face". I do encourage you to read it all. The whole thing is appropriate, but due to the length, here is an excerpt that summarises how I feel about self worth.
I look at pictures of myself as a child.
I looked lumpy, unformed, like a piece of dough,
and it has been my task as a human being
to carve out a mind, carve out a face,
carve a shape with arms and legs, to put a voice inside,
and to make a person from a presence.