Two words to sum up "controlling" cortisol, your body's stress response hormone: Eat and Sleep
If you want to grow, heal, and minimize breakdown, get some shut eye and eat right and on time.
Your body's regulation of the various hormones, such as hGrH, insulin, cortisol, and testosterone ( and a bunch more), are linked in to this. A restful nights sleep and naps are essential. Timing of your meals is simple eat often, and avoid gorging or skipping meals.
Lift hard, but allow for recovery.
Sometimes we try to over complicate.