How do we gain self awareness

Darren was recently ticketed for speeding over 110 mph on the freeway. when the police officer stopped darren and asked him why he was going so fast, he replied that he was "king of the world." the month before this, darren felt sad and listless and had trouble getting up the energy to go to school. he probably suffers from:

Name 3 type of doctors that use medical furniture (chairs), and diagnostic equipment as well as exam tables.

Wjat are substances intentionally added to food to produce a desired effect?