Just completed W6 R3 and it was the first time I've had to argue with the voices in my head telling me to stop!
I had lots of things to distract me from the boredom of the treadmill; music in my ears, tv with subtitles in front of me, people swimming in the pool below, and men grunting whilst body building behind me (!), but at the 8 minute mark I all i could hear were the voices telling me that I wasn't going to be able to get to the end!
I battled through to the half way point, even then telling myself that if i just got to the 20 minute mark I could always do the 25 minutes again, until I hit the last 6 minutes or so and finally convinced myself to ignore the sods and push through to the end!
I'm hoping that they don't make an appearance again over the next 3 weeks! But at least I've learned today that I can shut them up!