I use to do the clock thing in the shower; otherwise I'd sit in there all morning lost in day dreams and be really late for work (love sitting in the bathtub with the warm shower raining down on me). So, I got a kitchen timer but I still kept sitting there and was always late :-)

I would try turning the clock to the wall so you don't know what time it is? She if you can use your anxiety for something good? LOL I'd set it to go off when I had to get up and figure out how to turn it off from the back but then not look at the time, just "sense" it passing too fast or whatever.