From a birds eye view I would say seperate the "why am I doing this" from "how do I get their"
For instance, maybe I want to replace my job income (and so technically be financially independant) in 3 years. How many flips is that? or units? or whatever - the two sides of the coin should be merged , obviously "how many units" you want in xyz years is part of the business plan but when your weighing the costs to your personal life having the "reason" tied up right along side it is going to be golden for getting you through , so as an example - say you're coming up on the deadline in 6 months and you're 20% short - well if the focus was just on # of units you could just make some excuses and continue on as you were but if you also had, in writing the commitment to yourself that you needed those units to fund your kids college or something it puts that extra fire under you to take a closer look at whatever budget you've made and how much youre sticking to it - or hustle some overtime and start networking one more night a week or whatever.
Sorry if that was a little ranty :)