Sometimes it isn't enough to just go for a run if you want to make a step improvement to your fitness level. Self motivation is great when you have it, but most of us will find it much easier to keep something going if it is made fun and others are involved. Personal trainers and Gyms that specialise in providing expert instructors to get you on track to achieving your goal might be the way to go. Some of them will provide free or cheap trials, so go on, book yourself in and change something for the better in your life.