Meaning to form in the mind is from late 14c. Phrase Shape up (v.) is literally to give form to by stiff or solid material; attested from 1865 as progress; from 1938 as reform; shape up or ship out is attested from 1956, originally U.S. military slang, with the sense being do right or get shipped up to active duty.
Anxiety disorders are a group of mental disorders characterized by feelings of anxiety and fear. Anxiety is a worry about future events and fear is a reaction to current events. These feelings may cause physical symptoms, such as a fast heart rate and shakiness.
Specific anxiety disorders include generalized anxiety disorder (GAD), panic disorder, separation anxiety disorder, and social anxiety disorder (social phobia). National prevalence data indicate that nearly 40 million people in the United States (18%) experience an anxiety disorder in any given year.