Justin hurt himself when he tried to jump into a pool from the second story of his apartment. he told his friends that he could do anything. just the week before, he had been despondent and depressed. he could be suffering from

The correct answer is known as "Bipolar Disorder".

Bipolar Disorder is described as a mental illness that affects a person's daily life, such as an individual's daily activities, mood, energy. People with bipolar disorder shifts from mood-to-mood. They may also experience depression in some parts due to the effect of the disorder to the individual's mind.

This would be a true statement