CB, sorry, I have only just spotted your question on the last page vis a vis the mid-week training thing.
I am not as good as you might think. I have a schedule which has me doing something every day except Monday which is my declared rest day. The reality is that I don't always train every day - sometimes I am too tired. The trick to this is the schedule. Don't get too anal about it - but knowing that you should be doing something as per the schedule is the incentive to JFDI. If you have a schedule saying that you will run every other day, you have the flexibilty to move a day if you are too tired from work, or the train is late or whatever..... the other thing I hold close to my heart is that 30 mins is better than no mins - in fact some very successful athletes have shown that running good quality 30 mins sessions is as good as a non-structured longer session.
Sometimes its tough................... just keep reminding yourself that less than 1% of people will ever get to a mara distance! You are part of that elite
(apparently some people go through and beyond the mara distance - they must be plain stoooopid)