That is the proverbial question, is it not? How can I get faster by actually training slower?
Read these - Testimonials:
2018 Disney Marathon Weekend;
Winter/Spring 2018 (updated 3/19/18)
Personally, I trained too fast for years. PR the day! After my 5th failed attempt at breaking 4 hours, I decided to do a lot of research. I decided that if I was willing to follow other training plans, and yet wasn't yielding the outcome I was looking for, then maybe it was time to listen to other "radical" ideas. My 4th marathon was a 4:20 (PR at the time) in November 2014. My 5th marathon in May 2015 was a 4:58 (a PW). I changed the mindset and altered my training. My 6th marathon in October 2015 was a 3:38. I set PRs DURING the marathon in the SECOND half at HM, and nearly 10k and 5k! There's a ton of science behind the methodology. It seems so counterintuitive, but I hope the testimonials above can show that the method can work.