When we are depressed, the ego inside us likes it and wants to keep us in that state.  We get to make excuses, blame others, justify our sorry mental state, and find no shortage of evidence that we are right - the world wronged us.  It dominates you when you think that voice IS YOU.

Dissolve what's inside you that calls for more misery - by simply recognizing it.  Call it.  That victim voice inside you IS NOT YOU. 

Once you do that, its power over you goes away - and the real you can emerge again.