When Will the Threshold's be Over?

Today was more threshold work. 12 minute increments x 3. I could do the first two okay, the third I decided to just do 6 minutes. It was still a challenging workout. I just knew I needed to do my best. I'm worried that the marathon is going to be 10 million times harder. How will I ever do it? I know I can do it. I've trained so long and hard. There's no way I'm giving up. I will make it to the finish line even if I have to crawl. I was happy when I finished todays exercise. Next Tuesday will be the last threshold workout. I'm very happy about that. Weight: 119.5 pounds Breakfast: cereal, orange juice Lunch: Lean Cuisine Snack: peanut butter cups Dinner: Pizza, cinistix