Eyes on the prize

Sometimes it's really hard for me to focus. I don't think I really have a strong will power. I always find myself distracted. I always set these goals for myself but I always find myself forgetting about them a week later. For example magic, I decided I would learn how to do sleight of hand tricks in magic but I practiced for about one week and forgot all about it. I always said I would get into pen spinning. I also practiced about one week and forgot about it. I can't really buckle down . I think if i started smoking i would never be able to quit. I wonder how i can get some resolve