Life is a beautiful game which passes its ball from one court to other, only thing is we have to wait until our time comes. Don't backout from your goal for being cheated. Learn the lesson from that person who cheated you. He is the only one who can teach a lesson which you cannot forget in your life. Use that lesson against him when you get the chance. Remember, don't lose the opportunity to use the same arrow which that person used to you. When you use the same path that your opponent used, he will learn a lesson that is not to cheat others. When you use the same way what he used don't think that you are also cheating that person, think that you are just giving back what he gave to you. Why to keep other's things with us when they are not ours? Be thankful to him after teaching him the same lesson for teaching that lesson to you.