Let your Faith in God be your optimism in life. Faith is an optimistic outlook in the Lord to provide and guide you to where He knows is best for You and what is good. Even in rough situations maintaining an optimistic view point and Faith it will make it an optimistic situation. Do not let that what is not of God hinder you or tell you give up. God does not Give up you, it is you that gives up, so don't give up :)