Congratulations on making it to week 4!!!!!

Sorry to hear about your off day!! It's so discouraging when that happens, but toughing through it is what training is all about. You're teaching your body that your mind is in charge. It's weird because, as much as I've been running this year, I dont feel like it's gotten any easier overall. But the will power has gotten easier - if that makes any sense. My ability to be comfortable outside my comfort zone has increased a great deal. Running is HARD and you should be more proud of the runs you complete even when you want to quit...even if you have to walk because you didn't quit. The glorious day of easy running is around the corner...but it doesnt do house calls. Go and seek it out!!

As far as weightloss goes, when I was training for my first half it seemed like nothing changed...then WHAM - the weight melted off. I'd look for other signs of improvement rather than numbers on the scale. Are your clothes fitting better? Do you have more energy? Does a flight of stairs no longer leave you winded? Has your quality of life improved? The scale is so deceptive. If you still feel the need to lose lbs, definitely pay more attention to your nutrition. The C25K is great but it doesnt exactly knock out a ton of calories. Especially early on. Stay with it...maybe I'll be seeing you in the half marathoners group soon

First of all, congratulations on making the decision and following through with the first three weeks of the program!!  I completed C25K at the end of November, and started the One Hour Runner program, and will be starting on Week 5 tomorrow.  I, and a lot of other people, can totally relate to how you are feeling.  I've repeated a couple of the weeks in the C25K program, and based on my conversations with others on these message boards, they have as well.  You are definitely not alone in your journey.  I also know how tough it is when you work so hard, and don't see results yet, but you will.  There are a few things that I've learned in this process:

• You will have good runs and you will have bad runs, particularly the more you do it.  It's just the law of probability.
• By starting the program, you have already worked out more than you would have before, so give yourself a break.
• Also, give yourself permission to slow it down if it feels too hard or you are not enjoying it.  The only way you will keep up with the program is if you like it.  Just by progressing your are doing more for your fitness than you had before.  As you run further, you will get faster.  The point right now is to build your endurence (this is advice that took me awhile to learn since I'm so impatient, but it's true).
• Even though you haven't seen a weight decrease, you are building your fitness level up, each time your run.  There's a quote on another board that says "if you want to lose weight, eat better, if you want to be fit, exercise".  I think if you keep watching your food intake, drink plenty of water, and keep the running up, you will evenually see results.  It may not be on the scale, but it will be in the way your clothes fit, and the size you wear. 
• Just remember, it's progress, not perfection.  If you have to repeat a day or a week, do it, and feel good that you are continuing the program.  The program can be completed at any pace, whatever is comfortable to you. 

Sorry this is so long winded, but I hope this posting will help you.  It's a slippery slope if you start negative self-talk and doubting yourself, so do your best to push those thoughts out of your head, just shake it off and say that you can do this, because you can.  Good luck to you!