Sounds to me like a bad case of denial too. Happened to me and it got to the stage where I didn't even enjoy the event I was training for. Afterwards I took about a week off the bike and the next weekend I was fighting fit again. Was kicking myself that I hadn't done it before the event and reaped the benefits.
As others have said, 1 week off won't make a difference. If you do lose top end power then it's no big deal - you'll be in a far worse position than that if you keep going the way you are going.
Finally, if you are not concentrating then you could do yourself a mischief (probably by an easily avoidable accident caused by lack of focus) and end up missing the event or worse.
Take a break.