If you are keeping a workout journal, it is one of the most important/prior things you can do while building your great/strong body. The initial value (of what – workout journal) is determined by the mental aspects of a workout.
Before each workout, write down the sets, repetitions, and weight that you are going to lift in your workout. Check what have you done in a gym last week and what have you done the week before. A schedule - is a record of everything you want to do before you go to the gym in order to perform what was planned. You will go to the gym with the clear, detailed and alive picture of what you are going to perform that day. This simple action by itself will tune you for a good workout."
Are you keeping track of all your workouts in a journal? No? So, do you remember everything what you have done and what are you going to perform? And you have no need in a journal? It would be hard to guess for me either you're a genius, or the amount of..