It's next to impossible to have a peaceful, joyful life or to love others unless we first love (and forgive) ourselves.
One of the ways to love the self more is to stop comparing yourself to others. Although you are part of a whole, you are also an individual self, with your own path. The group and family belief systems you have taken on as your own can be obstacles to your self-love. The challenge of loving the self is to step aside from everything you are told, and ask, "Does this fit me? Does this bring me joy? Do I feel good when I do it?" It is ultimately your own experience that counts.