You can only be you when you do your best. When you don't do your best you are denying yourself the right to be you. That's a seed that you should really nurture in your mind. You don't need knowledge or great philosophical concepts. You don't need the acceptance of others. You express your own divinity by being alive and by loving yourself and others.
When you do your best you learn to accept yourself
Forgive yourself. The supreme act of forgiveness is when you can forgive yourself for all the wounds you've created in your own life. Forgiveness is an act of self-love. When you forgive yourself, self-acceptance begins and self-love grows.
I no longer agree to treat myself with disrespect. Every time a self-critical thought comes to mind, I will forgive the Judge and follow this comment with words of praise, self-acceptance, and love.