Hi Beth. I will try to explain this for you.
Giving yourself the love you wish you had received refers to making a conscious choice to love yourself now like the people who raised you should have loved you back when you were in their care. I means deciding to love, protect and nurture yourself like a good parent does for their child.
It's all about loving yourself well so that you will not make poor choices in life which will only bring you future pain. When we love ourselves well we take care of ourselves physically, spiritually and emotionally. (So we don't do things like smoking, driving drunk, sleeping around etc...) When you love yourself well your self esteem rises and you automatically want what is best for yourself.
People like Roberta who are just waiting for another person to fill the voids in their lives will never find what they are seeking, and will consequently always feel unhappy. That is because they have failed to learn the lesson that each person has a responsibility to learn to fill themselves up! Only when we have become fully formed and complete (or full) human beings are we truly able to love another in a way that will be ultimately successful.
When people are unable to acheive becoming whole on their own, or must have the presence of another in their life to function as a whole, they become dependent - which is the opposite of what loving someone and being loved by someone is all about.
Hope this helps!