Another note, I can see where the OP says it is more difficult to put in hours..especially for those who play full time.

When you win 100 dollars in an hour you might think "I can do it again whenever I want to" and put off playing. When you are in a downswing yoy may think "[censored] I need to make some money" and play a lot more until you are back on track.

This is why having some sort of schedule is so important. You should have a set hands goal that you meet no matter how you are running.