noo-ROT-ik

Neu-rot-ic
Informal A person prone to excessive anxiety and emotional upset
The American Heritage® Dictionary of the English Language, Fourth Edition

It has perhaps been most simply defined as a "poor ability to adapt to one's environment, an inability to change one's life patterns, and the inability to develop a richer, more complex, more satisfying personality." Neurosis should not be mistaken for psychosis, which refers to loss of touch with reality.
http://en.wikipedia.org/wiki/Neurotic

I admit it, no shame, I deny responsibility.  After all,  it's clearly either genetic or a result of that early toilet-training, oh the psychological repurcusions. No evidence of neurosis evolving into psychosis.

So easy to think of things to write when I should be studying...