The only person who can determine your value and worth is YOU!
On two recent, separate accounts, I have been told that sometimes behaviors have to change in order to change beliefs and mindsets, which ultimately can change your values. More often than not, we are conditioned to have an impact on someone's belief system first to effect a change in behavior. I can't tell you which approach to use for different life circumstances - I don't have that kind of road map for you. But, when it comes to this thing called self-esteem, self-love, believing that you are both beautiful inside and out, may have to start with action.