Is it only depression
Remember, it's a good feeling to be frustrated. Frustrated means your brain is trying to solve a problem and rather than being satisified with the same old solutions that haven't worked in past it's still searching, searching, searching...
I also think you need to find a way to vent out against the feelings of being overwhelmed. When the world is crashing down around you it really does feel good to "crash back". I used to go driving until I got pulled over doing 139 in a 55 MPH zone. ;-/
Now I just find some kind of physical activity to do that allows me to beat the living hell out of something until I've broken it, or myself. I mean honestly give yourself over to it, total phsycial exhaustion... As silly as it sounds, there really is some truth to the phrase "exorcising your deamons".
Beyond that, don't self medicate on atavin, it absolutely is one of those drugs that the more dependant you become to it, the more ABSOLUTELY DEPENDANT you become to it.
You may need to have your meds adjusted. Sometimes it takes some work to get the right dose and type of medication.
As small as this thought sounds, remind yourself that you need to live "ONE DAY AT A TIME". Get through today, for tomorrow may never come. This sounds petty, but I saved myself a ton of sanity by living by this simple rule.
And lord have mercy - CRY! Tears are good for the soul. Let it all out! If you can of course. There was a time in my life I was so stressed and couldn't even muster a tear to save the world if I wanted to.
Do you have a good friend you could talk to or who could help you gather the paperwork you need? "Venting" often does good as well.
Last (but really should be first) PRAY!
I wish you the best.
To begin with, you are not a loser! If you are only seeing a primary care doctor, you need to get yourself to a psychiatrist for the right diagnosis and appropriate medication. The psychiatrist can refer you to a qualified therapist who can help you with all your other problems.