Puffy Cookies! Please Help!?

I have been trying to make chocolate chip cookies, but I have a problem! I want my cookies to be flat and chewy (and I know this is possible). Every time I make them, they turn out puffy and cakey, no matter what recipe I use! Even the bag of Betty Crocker cookies I bought turned out puffy, not like the picture on the bag. Can someone please tell me how to make my cookies so they will turn out flat and chewy? I am making them homemade. Thank you to anyone who replies :)