Hey - I suggest checking out this interview from the "Why am I series": Why do I wake up in a mood
"How can statements like ‘I hate mornings!’, ‘I’m not a morning person’ and ‘it takes a long time for me to wake up in the mornings’ become part of your self definition & personality?
Why do you sometimes wake up in a bad mood for no apparent reason?
How can you then lose an entire day because of this mood?
Where do these bad moods come from?"
As far as I remember, this recording should be of support with this point, Wangzhangkai.