I just avoid the afternoon all together.
(That is what I did from my best month)
Give it a try, go do something else other than wanting to trade. At first, its hard to do because you have all these ideas you want to try out. That curiosity needs to be satisfied, and the end result may end up losing what you made in the morning.
If you made money in the morning, trade smaller position in the afternoon.
Now I know you use tick charts, just do a volume comparison with a time chart. More volume, more people at the party, people with BIG accounts. Heck I don't mind rubbing elbows with the rich and snub the poor. :p I snub myself all the time!