It's quite hard to do that, trust me! I've tried.
To be honest, I think the mirror plays a much bigger role than we bother to think! Especially when we constantly look every few minutes - which I've been doing today, looking all the time. It's like thinking "I know that pimple was there 5 minutes ago... BUT maybe it's not there anymore! I have to check!" and then you get all disappointed when it's still there.
I hope this works out for you! I think you should get a goal as to how long you'd want to go without looking in the mirror (the only reflective surface you can look in if you have to is something like a TV screen, nothing that lets you see your skin). I'd recommend at least 3 weeks, which is a long time, but I think that it would be wise to go at least a few weeks to help you get past the NEED for a mirror. In fact, in the summer when I was sick, I didn't look at myself all that much for about 3 weeks or so. And I was clearing up.
Since looking in the mirror doesn't really change my skin, and since mirrors lead to me picking, I think I'll join you in this attempt

Do you mind if I post here a bit with my own thoughts/annoyances? We can help keep each other motivated. Since I've looked a lot today, I'll start tomorrow. So tonight will be the last time I look in the mirror, although I might still look at myself from afar in my bedroom mirror when getting ready for classes, since I can't see myself very well without my glasses, and it will be too blurry for me to see any detail.
Yeah that's alright you can post. I was thinking about a time goal so three weeks actually is pretty good. Your right about the whole mirrors lead to picking. Since there won't be a lot of activity (not much to report about your face if you don't know what it looks like) I will try to post maybe every two days. I think it's alright if you look at yourself from afar. In fact it maybe better it might send a brain signal that I actually have a decent face. (since you can't see pimples) I know there will always be an urge to look at your face in the mirror and feel free to comment on your thoughts especially if you want to shout at that person that looks at you and you really want to look at your face. Good Luck!