Started reading MMM about a year ago. It's taken about this long for us to finally decide we're ready to take the plunge. It took some time to get hubby on board, but he's a real numbers person so once he opened up to the idea, he realized how much sense it made. We've made several improvements over the last year though such as planting a garden, shopping at Costco, maxing 401k, getting rid of cell phones, Netflix, Hulu, random subscriptions we forgot we even had, going down to one car, etc.
I'm currently 24 and know that we can do it in 10 years time!