I hope everyone who is training for a half marathon is getting out and logging the miles. I have been doing this for so long I forget to mention how important it is to log your miles. The miles that you run have to increase gradually. It is normal to increase your mileage by about 5% per week and never increase by more than 15% per week.20
You can buy the Complete Runner’s Day-By-Day Log 2014 Calendar from amazon.com for about $10 now. I have used these books in the past and feel they are worth the money. It is handy to have a book that is designed for runners with little tips on every page. The book encourages you to take notes and comment on your health and how you felt. In most cases, you will not go back and read the notes but if you are injured or want to get faster, the notes will come in handy. I use a plain old open source calendar that works for pretty much any word processing program. You could draw something up on a piece of paper as long as you track your weekly mileage.
I harp on tracking your mileage because it helps your motivation. The endurance phase is all about increasing your mileage so you are capable of making the distance. To increase your weekly mileage, you have to get out and run 4 days per week. It is okay to run 5 or 6 days per week. No matter how many days per week you run, track the miles and increase your weekly mileage slowly. If you are a regular reader, you know that I am training for a 2:15 half marathon in late march. I am going to carry a pace sign and lead the group. My training is going to be a little different from the standard plan but it will be close. My long run this week was a 6 mile run at a 10:30 pace. I could have gone faster and I could have gone farther but I did not. It is not good to overdo things. I am recovering from injuries (from over doing it) and rest (from finding excuses to take it easy).
Use your calendar and try to stay close to the plan. When you look at your calendar and see a blank where there should be miles, it can give you the extra motivation to get you out for your run. It works for me, it may work for you.