stacey,
In my opinion, you try to find definitions for your problem instead to find the problem itself.
Look what you wrote about the crying in your first post:
" I feel like there's something wrong with me. I have zero ability to handle stress. Little things that don't matter at all upset me so much. My boss said something to me today about the order I did my side work in.....long story, but to summarize, I did all of my work, she just wasn't paying attention. Then I was carrying a huge box of napkins and paper towels up from the basement and the bottom of the box broke and everything went flying down the stairs..what a pain. Then, I'm working with this chick who has a man's voice and a macho overly assertive attitude and I was trying to vent a little by telling her about all of this crap, and she looks at me and goes "Deal with it! Why are you telling me all of this?"blahblahblah....So I told her she's rude and I won't try venting to her again, but I was so upset after I walked away that I started crying in the busroom and I was all shaky.
I don't think that was a good reason to cry, I feel like I'm too sensitive, like I should have a thicker skin, like something is wrong with me. I don't have PMS, everything at home is fine, I just get so upset about stupid little things...This is just one example.
Last year one of the cooks gave me a hard time, I was really busy, Had a little hangover...I got so stressed out that I started crying and I couldn't stop and my boss had to wait on my tables.
When I was new there I heard a girl say "I thought I sucked when I was new!" (accent the second I), once again, I'm crying...
It happened before with another girl who wqas rude to me when I was new, and last summer I found myself crying at work twice in one week because I was stressed out..."
Where did it happen? At work. That's why I suggest your work is one of the stress factors you have.
The other factor can be from your childhood:
"maybe I'm just introverted or really sensitive, or I have issues simply because my mother treated me as an unwanted pain in the ass or maybe I have brain damage from when I fell down a flight of wood stairs and got a concussion at age 5.. maybe there's no name for it."
That can be a reason you have beeen looking for love with piece of shit

men.
stacey, it's over! You're happy now. You did it. You're stronger than you think. Start be an owner of your life, stay above those factors.
Don't waste your time for definitions of your stress or your problems. Think what you're really want to do with your life.
By the way, reading the books about diseases gives the feeling you have all of those. :p
The all that I got so far you’re gifted, creative, smart, sensitive, good heart person, very pretty (yes, a saw your pictures), and...

stressed.