Let me add to this list: STOP drinking anything but water past 9a.m. -- coffee until 9a.m. & martinis or wine occasionally at night are fine though ;)
Avoid eating low-fat anything and diet anything.
It doesn't have to be breakfast. If I'm going to skip anything, I'd rather it be dinner. That way half the time with less readily available energy, I'll be asleep, rather than thwart my cognitive abilities when they matter most, usually in the morning.
The accepted wisdom and fitness/nutrition and breakfast is that until your first meal of the day, your body is in sleep mode and won't start metabolizing yet.
I'm not calling sugar out what-so-ever. I said avoid diet and low-fat anything... normally things are low fat and diet because they have a sugar substitute. Maybe you missed that? What I was calling out is stay away from artificial.