It takes discipline to go to the gym on a consistent basis and train in an organized manner. Stay organized and record your workouts in a journal. Keep track of information such as injuries, soreness, personal records, etc. This training system will give you a plan, but it will take discipline to execute the plan.
Most people have good intentions but lack the discipline to keep going.
Disciplined training means training consistently, training in an organized manner, and keeping focused on your goals. I have found that when it comes to fitness training your results are directly related to your effort. Fail ure to reach a desirable level of intensity or muscular fatigue will result in little or no gain in strength or muscular size. Therefore, you should attempt to per form all work sets to complete failure. Also, you should attempt to lift heavier poundages on a scheduled basis.