Did you ever stop to think that your bad mood might just be related almost exclusively to lack of sleep? I see an ethereal soul behind the deepest actions of man and yet, those get covered up by the flood of inflammation that isn’t cleared with good night sleep. So, your authentic self, the one that you are here to get to know, could be covered up almost completely by lack of sleep.
And so it goes with all of the things in life that deplete you of your energy. Caffeine which is fake energy and further depletes you if you don’t overcompensate thereafter. So next time you feel like you need coffee or chocolate as a pickup, you would be better of finding a quiet corner and getting a short nap.