Why do i feel like i am lacking something inside?

I dont feel complete there is something missing to this puzzle that is me? Its not material! I think its unconditional love! i dont think my man loves me unconditionally plus i had to make myself numb since we have been fighting every other day for the past 3 years. i feel our baby girl is the glue in the relationship. also hes not a good provider for his family he can never keep jobs, has a reckless compulsive behavior and he lies like a persian rug. I just wanna feel happy and complete inside. how can i achieve thins?