Depression is a common occurrence and affects millions of Americans to varying degrees. Depression changes the way you see yourself, your life, and other people in your life.   This changed view can dramatically affect you by shining a negative light on all aspects of your life and impair your ability to be at your best.  

Frequently with depression, EEG studies* have shown that portions of the frontal area of the brain are under activated. When the frontal regions of the brain are asymmetrically activated, clients may exhibit signs of sadness, difficulty concentrating, or decreased motivation.   

Source: https://www.researchgate.net/publication/225791894_Neurofeedback_Treatment_of_Depression_and_Anxiety 

Neurofeedback works to train the brain and activate the brain to even out these differences and asymmetry. Training with Neurofeedback teaches clients how to naturally increase blood-flow and raise activation levels in the brain, which in turn increases happiness and positivity while keeping depression at bay.