There are many different kinds of depression. I have realized that although I've done an overall search on it that I still mainly draw from personal experience. Although it is good to pull from these memories and emotions, it does not give an open enough view. My research needs to be more specific so the general symptoms the main character has are more universal.

Major Depression

Also referred to commonly as clinical depression, and less commonly as major depressive disorder, major depression is depression that has someone having mostly bad days for a few weeks. Many kinds of depression share the symptoms of major depression, but display either additional symptoms or different measures of time. 
Symptoms can include:

• Loss of interest (general)
• Loss of pleasure
• Concentration issues
• Feelings of worthlessness
• Restlessness, mental sluggishness 
• weight fluctuation
• Suicidal thoughts

These symptoms are general and can be seen differently with every individual case. In this case of the main character, I want him to exhibit many of these in all the aspects of his life shown to give the audience a view on how they affect different facets of daily life. This is important in that I want my audience to understand that depression can affect anything in anyone's life and that it affects every aspect differently.