My pal brought over homegrown corn, tomatoes and string beans the other day. I was so grateful. This same person texted me, “I’m up for a hike, let’s go!” She also invited me to a cool yoga class happening on a rooftop deck. This friend is what you call a good influence. A good influence prompts positive behavior. He or she will have your back and help you lead a truly healthier and happier life. They’ll...