i do not have a wide variety of moods. i do not know what "happiness" subjectively feels like, but i equate it to an active and continuous sense of "pleased-ness".
i am "pleased " only for short periods of time (like when something i am working on turns out well).
i visualize "sadness" as a feeling of sustained displeasure. i am only displeased for short amounts of time (like realizing i did not switch a camera on before filming something interesting).
my default mood is "complacency", and i may smirk on occasions when i observe what i construe as absurdities from my complacent perspective.
i am not able to be moved to excitement (or despair). i remember my childhood psychiatrist informing my parents that i had a "poverty" of emotions (among other things).
the only mood i feel that displaces me from complacency is "impatience". i can be extremely impatient, and that is as close as anyone will ever see me acting like i am cranky, but as soon as the obstacle i am impatient with dissipates, i return immediately to complacency.