I discovered MMM in late 2014. If I recall correctly, I was contributing around $3500/year to my 401k (6%..maxing employer match, but not more).
Fast forward to the last day of 2015. In the last year, I opened and fully funded a Traditional IRA and ramped up my 401k contributions throughout the year (first 10%, then a bit more, then eventually to the most my employer would allow - 40% - which would still have fallen short of 18k by the end of the year). However, I knew the right people at the right time and was offered a new job in late September, which allowed me to max my 401k - so on today's paycheck, I've hit the IRS limit for the first time. :D
I also cut my phone bill almost in half (it's now less than half of what my employer compensates for my phone), cut my AZ home's summer electrical use by almost half ($397 -> $214 summer peak), and decluttered/donated a massive amount of stuff. I'm now in NJ (due to the aforementioned job) and I have a friend moving into my master suite in two weeks (on top of the other two rooms which are already rented) - and he's taking over all the utilities for my house, so it'll basically sit there and pay for itself and wait for me to move back to AZ one of these years. Add in well over $1k in credit card rewards, and it's been a great year! Here's to an awesome 2016! :)