Race warmup

I know exactly how I need to run a race to produce the best time I can, and I intended today's run to be tactically correct. As usual, though, I failed.
What IS the problem?
I start out climbing out of my hilly neighborhood. I should do a 10 min. mile so I can get warmed up without going into oxygen debt. But a 10 min. mile is just too slow. I'm too impatient. So I run it in 9:25.
OK, that's not a killer. The next mile is the killer. I should run it in 9:10, so that by the end of the second mile I'm loose, but not winded. The first two miles of my usual route is very hilly and takes a lot of effort. If those two miles were anywhere else in the run, they'd take much less effort.
So, I run mile two in 8:35 and I'm winded.
Now I'm into the middle of the run when I should be effortlessly transitioning into faster and faster miles. But, because I started wrong, every stride is too much effort. It's a good thing it's just a 5.5 mile run, because I couldn't handle a 7 or 8 miler with such a poorly executed run plan.
This was my last run before the Olathe Heart & Sole 10k on Saturday. I'm not going to win it, and I'm not going to place, so the only pressure is to run it strategically and post a time that's good for me. That means I have to do what I didn't do tonight. What I almost never do.
Will I do it? Tune in Saturday.