Caving In To Impulses

So, I've already faltered on my new get and stay in shape better than I have been. I wanted to start getting up early and making it to the 7:30am CrossFit class so then the rest of my day would be mine and I wouldn't have to worry about not eating 3 hours before class. I got up yesterday and made it to the gym by 7:30, but the door was locked and our trainer was nowhere to be found. One of the other ladies had his cell phone number, so she called him and ended up waking him up. We waited almost 30 minutes outside in the cold. Now, that is not my main concern/complaint about the early morning class. There were only three of us yesterday and it was all girls. I got a good workout, but felt that my body was responding very slowly and I didn't really feel driven to do any better because of the lack of competition. I like having guys in the classes simply because it motivates me to kick ass harder. Has nothing to do with finding any of them cute, which I do, because I'm not looking to date any of them. I'll barely talk to them let alone make eye contact because I don't want to screw up how comfortable I feel when I'm there. I've shat where I've slept before and I won't let that interfere with my life again.
So, 7am rolls around this morning and I just didn't want to get up and I'm pretty bad about letting myself do whatever I want when I want to when it comes to my impulses. I try to look at it as a positive thing because I'm ultimately living authentically, but it has been known to be detrimental to my life, health and relationships. What am I doing about my CrossFit time crunch? I'm hitting the noon o'clock class and kicking myself for caving in to the blueberry scone at Charbuck's an hour ago.