When I'm working on a leak while playing online I'll put a sticky note to re-enforce what I'm trying to fix. For example I recently had a bad run of beats and lost confidence which worsened the situation and make me play a weak/tight style without realizing it. I took a break to get regrouped and study my PT stats. When I got ready to hit the tables again, I put notes like "Be Aggressive", "Raise" etc on the monitor.