Ending class,

hopping into the car, turning up the music and ridiculously singing my ass off the whole ride home makes me a very very happy person.

Hypomania

Hypomania (literally, “below mania”) is a mood state characterized by persistent and pervasive elevated (euphoric) or irritable mood, as well as thoughts and behaviors that are consistent with such a mood state. Many people also experience signature hypersexuality.

Individuals in a hypomanic state have a decreased need for sleep, are extremely outgoing and competitive, and have a great deal of energy. However, unlike with full mania, those with hypomanic systems are often fully functioning.

(Source: Wikipedia)