Just don't look at how much you are up or down until after your session. Or instead, only look at the end of every day. Knowing how your doing in a session can only hurt your play imho. If you are playing bad, you could potentially tilt and lose more due to foolish play. And if you are up you may pass on plays because you don't want to potentially lose your profit even if you know the right play to take.

I used to look constantly throughout a session to see how well I was doing, but now I only look at the end of the session and it has been a relieving experience. Plus it feels really good when you think you are breakeven or down and your actually up.