Dr. Seuss is right, we must be ourselves no matter what and we need to learn to live our lives to the fullest no matter what others may think about us. It is not always easy to do this but it is a sign of spiritual maturity when you understand John 10:10, Jesus stated, ".....I am come that they may have life, and that they may have it more abundantly." The abundant life is your heritage because of the death, burial and resurrection of our Lord and Savior, Jesus, and you must learn to embrace it.
What is important is what God thinks about you, not what others would like to impose on you. Learn from God's word what He says about you. For example, in Deuteronomy 28:13 it states, "The Lord will make you the head and not the tail..." That means He wants you to come out on top no matter what the circumstances. Learn His promises and begin to confess them, for they are the steps towards an abundant life. Be the optimist, and see the glass as half-full and begin to trust that God will overflow you with blessing that the glass will not be able to contain.