"Do your best, forget the rest"

I felt good after yesterdays run.  We went up to Highland Drive and ran 4min walked 2 min for 45 min.  There were a bunch of gentle hills, and after Mondays repeated hill, these were quite nice.  I'm feeling stronger everytime I run.  I'm pretty sure I could tackle a 5K right now, I wouldn't be fast, but I would finish. I've lost 12 pounds, and all my clothes are getting lose.  I might be able to drop a pant size here pretty soon.  Running is giving me tons of energy, I find myself waking up earlier every day, being more active, and definately getting more done. 
I put the quote "do your best, forget the rest" as my title because I've had to remind myself of that today.   I've got a few things happening including my daughters surgery, so I'm not going to be able to exercise for a couple of days.  I feel nervous that a few days off will make me 1 gain weight, and 2 step back into an old habit of not exercising.  My best today and tomorrow is eating small portions and trying to be as active as possible.  I feel like half the battle of losing weight is in my own head.  I've got to work past my self defeating thoughts!