Consider how hard it is to change yourself and you'll realize what little chance you have in trying to change others

Whether it's trying to change your spouse, your child or your colleague at work... people don't often change. You can't teach an old dog new tricks. What you can do though is be the change you want to see and break the cycle. You'll not only positively influence those you intended to change but you'll also attract other like-minded individuals like yourself in the process.