One needs to first understand that what are emotional illnesses. Depression is a clinical illness that results due to chemical changes in our brain, and this is what brings symptoms of sadness, loss of pleasure, and mood changes. Also similarly anxiety disorders also caused by these chemical changes causes irritability, excessive thinking, and temper outbursts. You need to understand that these chemical changes could happen in any person, and they are common and there is no reason to blame one own self or get in the frame of mind that you are in presently, as once you talk to an expert, you shall feel better very soon, and these emotional distresses would stop totally. So I would suggest that you talk to a psychiatrist at the earliest.