When we’re young, we get used to improving every single season as our bodies develop and we train more. Progress becomes the norm, and we start to believe that the more we practice, the better we’ll become.  But it isn’t always that straightforward. At some point in all of our careers—usually toward the end of high school or during college—our improvement starts to slow down.  The bottom line? It’s nearly impossible to improve in a linear pattern every year. But that d...