I don’t have too much to add here, since you’ve already been given some really great advice – both for the physical and mental aspects of running. Something that I’ve recently started incorporating into my training and growth as a runner is addressing and analyzing the question, “Why do I run?” It sounds like you’re living a healthy, active lifestyle. So what is it that makes you put on your shoes — even on days you might not feel like it? Running is about being active and staying healthy and setting goals for ourselves, but it’s also about who we are as people. While it might not help you with your immediate goals, really knowing Why you run may help you with feeling like you’re in a slump. I certainly know it’s helped me. Best of luck!