Youth has limitations, and there is a basic reason for your inconsistency, as you call it .. due to the fact that you’re growing and changing every day of your life even up to and inclusive of your twenties. (20-22)
Childhood gives way to boyhood and boyhood gives way to the teens and the teens then leads to young adulthood … all of which will find changes in your personality, temperament, aggressiveness, perception, tolerances for physical and mental duration and qualities of said same. In short, your all a different person – whether you know it or not, every time you start a new day. Your body and its chemical balance and other maturities will give you a rollercoaster of emotions sometimes that will, of course, find its way to the athletic field in addition to your social relationships – friends and family.
Now it would be ever so easy to broad brush this experience – that we all go through, but that would be an oversimplification. Some youngsters mature a lot sooner then others and thus don’t experience the peaks and valleys of “growing up” like some other youngsters do.
On the athletic field what complicates this process .. for you youngsters,is the lack of understanding with these conditions by coaches, parents, program directors and so on. An the worse case scenario is when the youngster himself/herself thinks there’s something wrong with him/her.
The bottom line here is that we’re all different and our abilities to perform with respect to pitching is as variable .. sometimes day to day …. because of our changing bodies and the growth process that injects a ton of variables.
Go easy on yourself… because I can guarantee you that after reading this post you’re more than likely more knowledgable on the subject of inconsistent athletic performance then a lot of your adult counterparts.