Trying to lose weight

My husband and I have been TTC for about a year and a half well in April we went to the doctor to figure out why. Well it turns out I have PCOS and the doctor told me that losing some weight could lead to it going away but, that's not always the case. I always had regular periods throughout my whole life up until about 3 years ago. So, I want to try losing weight but, Everytime I do I never succeed, I always go off course. Where I live at we have no gym or anything like that. Any suggestions on losing weight, exercise, healthy eating?? I see so many successful weight loss story. What did you all do to succeed and keep at it?? Any advice is welcome!