When it's difficult to make your run work with your schedule, try switching up your schedule. My training guide worked great at home, but when I came abroad and had different working hours I had to figure out how to make it work. If you don't switch it up to make it work for you, then you'll end up missing workouts because you can't make everything happen that you want to in a day. Instead of forcing a hard scheduld on yourself- see if you can move things in your life around to accommodate for training. This will make your life a little bit easier, and you won't have to miss workouts all together. When it isn't working, change it up! :)