Since I've taken to sleeping with a CPAP attached to my face (a breathing apparatus to cure apnea), I expect to have a complete personality make-over.
I have 40-some years of sleep deficit to make up for. This should clear up my snoring, lower my blood pressure, banish depression, unfog foggy thinking, unleash creativity, etc.
Or not. I slept 10 hours last night. We'll see.