Isinglass...
Don't go there. I know it's easy. I'm in the EXACT same situation. Tons of experience, a college degree...and no one seems interested. The company I was working for filed Chapter 11. Everyone I speak to (friends, family) says, "You're the hardest worker I know. Anyone who hired you would be lucky to have you." And gosh darn it all, I agree! I am extremely hard working and I actually love to work.
Anyway, I have complete empathy...and of course, it inevitably bleeds into everything else...my writing sucks, I'm a loser...etc.
Try to take a few deep breaths and see the beauty of the world. Go on a walk, garden in your back yard. Whatever it is that brings you joy. Do something nice for yourself.
On the query front, did you post your query? Perhaps it would be worthwhile.
Take a deep breath (or have a glass of wine if you drink

) and try to relax. Feel free to pm me...it's good to have a nice support network.
~V