I think it's pretty safe to say that you are depressed. What you describe is very familiar to me.

Think about how you feel about your job, where you live, and the people (or lack thereof) in your life. Sometimes (for me anyway), a lot could be accomplished by changing one of the above. Then again, you can get to where you feel you have about as good as you're going to get on all those fronts. Then it can get awfully demoralizing.

You do say that you feel the weight of this unhappiness especially at work. You didn't type that by chance. Think it over. Do you dislike your work? Do you not feel accepted by co-workers? Are you not getting credit for your contribution on the job? Is the pay too low for you to survive on?

You've been managing to get out of bed. That says something for your resilience. But you don't want to go through your life feeling this way. The more recently this started, the easier it may be to identify what you really don't like about your life. If this sense of pointlessness has been with you for a longer while - like years - then you're problem may be even tougher. Life can seem senseless, at times. I think close, warm relationships are very tough to do without. If that's been lacking in your life, then it's a real big thing to live without.

By all means, tell a doctor and get feedback . . . maybe medication. The longer I live, the more I tend to believe that feeling really bad is not likely to be due to "a chemical imbalance of the brain." I think smart, sensitive, high functioning brains can end up the most frustrated. Most problems, IMO, have to be either lived away, or get loved away. I believe that feeling valuable and worthwhile requires that someone does value you. Even a good supervisor on a job can fulfill a lot of that need. Keep posting. We care.