Thanks everyone for your responses. Everyone had some food for thought and gave me things to consider.
Maybe it's not motivation that's my problem. Every conversation with my boss motivates me even more. I read the blogs and forums every day so that also keeps my eye on the prize. Also like some have stated, I don't need the new car, new clothes, blah blah blah, I might as well save the money. In fact I was achieving a roughly 40-50% after tax savings rate basically blind folded before coming upon ERE. I am approaching 70% now, and sustainably saving 80+% is definitely within reach as soon as I pay off the remainder of my debt. I look almost every day to see if I can find a way to shave a few more expenses off the table. The "savings" part is not really the hardship part, neither is the "low expenses" (and maybe I need to go less extreme on that, to make the hardship close to 0%.) It's just the working part that is so painful right now. It wouldn't be so bad if my job was "OK".
From all of your feedback I guess I'll work on the following approaches:
1) I'm going to lay off going carless for now. Winter is coming and I'm not excited about standing in the wind and snow waiting for a bus that is 30 minutes late to go run an errand. I H-A-T-E feeling cold. I'll probably go buy some nice beater car. It's not as cheap as carless, but it's not that much more expensive either, over time. This will reduce the savings/expenses mental hardship significantly. I guess I should live a lifestyle I'd be comfortable living indefinitely, rather than really getting into the realm of "sacrifice." I can always go lower in expenses later, once I have more time and less stress.
2) Start exploring some of the hobbies I was saving for ERE now. This might increase my expenses, but it will help making the "waiting" less painful I think if I view it as a slow transition to the ERE life, and I would get some of the benefits now. An additional benefit is I get the opportunity to try things now, and I'll know if I should budget for them later or not (what if I hate them?) and have a better idea of how much to budget.
3) Tracking savings on a shorter time scale and set smaller savings goals. This will show that I am progressing along even though % wise to goal completion isn't moving much. The problem is that my net worth is such that I don't have much in cash, so while I might be doing awesome on the savings front, I don't see it in Net Worth because lately stocks are going sideways or down. So I'll have to think about how to structure that so I don't get sidetracked by things outside of my control.
4) Work toward identifying a point in time to transition to semi-retirement if it gets just flat out unbearable at work. In other words, instead of working 5 years at a job I hate, maybe I could do a hard limit of 3 years, no matter what, and have a plan to do some kind of semi-retirement for the next 4-6 years, with ER after a total of 10 years of work. That way I can control and plan (and countdown to) a definite exit date, which I think could be motivating.