Your past does not equal your future
Are you letting your past shame stop you from moving forward to greatness in the future? What would have happened if Paul (Saul) did that? Would Christianity had spread at a similar pace? What about your pastors? Do you think they have anything in their past they are not proud of? Sure they do. But they continue to teach and inspire. And you, despite your past, can and will be used by God for greatness!