I don't think you understand the scripture nor Jesus Christ. He turned the other cheek for the aggressor's sake. He wasn't thinking about himself. Jesus said love those who hate and despise you. So, try loving the persons making your life difficult or just leave the situation.
By the way, it is okay to defend yourself. Jesus never said not to. He only wants us to when it is absolutely necessary. An occasional kick in the butt or slap on the face may relieve the aggressor's troubles a bit and maybe you need that kick or slap. Judge righteously before taking the step to injure another person.