I just celebrated my one year anniversary at my job, and I pray that I will win the lottery - or at least get a notice in the mail for jury duty so that I don't have to go to work. If however, I am really depressed and that is WHY I hate my job, then once I find a new job I'm still going to feel just as tired, uninterested, unmotivated as I feel now. Please let me know if you have any suggestions. It's probably both.
Extreme depression is likely to be a medical condition which requires medication.
But, since you are able to hold a job, your level of depression is less severe. Mild or moderate depression is almost always about suppressed anger. If you have been mildly or moderately depressed at various times in your life, you will probably notice that these were always times when you were angry but you didn't express it well enough. Certainly an employment situation is one of the most common of these. Even the most assertive employee isn't likely to feel safe about expressing all of their anger at work.