I Am Not As Strong As You Think I Am

I'm working towards assistant manager in my current career. Of course I have higher goals, but one thing at a time.
I can direct the staff in ways I feel suited for the situations at hand. I hold the patrons we serve quite well and can accommodate most requests with ease and efficiency.

I lead a 6 person, 6 animal house with little effort.

I have an amazing husband, I have four adopted capable children, two gorgeous puppies, two beautiful kitties, and two spunky guinea pigs.
I have a three bedroom, three bathroom house at the beach with a fully fenced in backyard with bamboo privacy hedges.
We rent, but are working towards ownership.

I've been through nasty situations throughout my adult life but I continue on with a strong head and strong willed personality.. To the public eye.

I was born to lead.
I was born to conquer.

However, more often than not, I'm sad. I'm angry. I cry myself to sleep several times a week. My self worth is non existent.

Material items are clearly not helping.
Love is clearly not helping.

What do I need to do to feel worthy?