Spoiler alert: it's not coffee. That can help treat the symptoms, but it's not addressing the root issue.
Today I woke up feeling great but quickly found myself in a funk. Worse yet, I didn't even have a good excuse as to why my mood and experience changed from hopeful to annoyed and frustrated. Isn't that messed up? I wanted to have an excuse because I wanted to blame something rather than come to terms that it might be random or (worse) my fault.
Regardless of what gets you into the fun, the most critical morning fix is... resetting your state.