Realistically, 92% of all failed fitness plans are given up on due to external reasons outside of the actual workout.
Not Allocating Enough Money For Gym Payments ( yet 12 dinners out a month are happily paid for )
Days are not pre-planned accordingly ( 'forgetting’ you have a meeting, and missing out on the opportunity for a morning workout you had time to do before work )
Unrealistic expectations ( Most people on average lose 1.5% of body fat a month, and that is with optimal focus and eating right )
Not changing your eating habits ( Eating right isn't hard if you plan for it by going to the grocery store and kick the fast-food meals )