Who better to explain falling to rock bottom than the residents of Bikini Bottom?

Always Blowing Things Out of Proportion

Face it, bad things happen. For people with Anxiety, however, the most minor problems can seem like the end of the world.

Oscar-Worthy Acting

If you don't want people worrying, you've mastered (or at least tried to master) acting like you're okay when in your head, it's definitely not the case. Very often, you have to let the repressed feelings out all at once as soon as you're alone.

Paranoia

It's not always thinking someone has it out for you (Though that sometimes is the case, especially if the person is the world), it could be randomly worrying if you have your keys, wallet, or even homework. You have to check everything before you're comfortable.

Bodily Functions

Things may happen with your body that you can't explain. Random headaches, nausea when you eat, as usual, sweating profusely, sudden itching, even shaking.

Self Esteem

Maybe you think very little of yourself, so everything bad that happens around you is your fault. Or you may may wear yourself out because you're trying to prove that you're better than everyone else. Either way, your self image is out of wack.

Overwhelmed

You're pushed hard, especially if people don't know how prone you are to anxiety. At its peak, you can barley function because your mind is everywhere. You forget things, and sometimes you have to avoid going out so you don't have to deal with other people.