21 Minute Intervals

21 minutes.  Still at full incline for 90 minutes.  Not even breaking a sweat, but can feel this is going to as much mental as it is physical.  Trying to get used to the 90 minutes.  Not even making it 2 miles right now seems like a waste of time.  Have to keep it in my mind that I am going to eventually catch up to myself and surpass what I had been doing and hopefully taking it slow, my body will be adjusting at the same time my mind adjusts.