Lots of good advice above. I would add "Learn how to say NO".
Look at what is in your day that is non-income generating (Prior authorization forms, School forms, VA forms, Prescription refills (we now threaten to charge $25 per batch, we seldom actually charge patients, but since they were warned they try to get their needed refills at appointments). Try to reduce time that is uncompensated or under compensated. It's not that one is greedy and wants more $$$, we just want to get home to our families at a reasonable hour. By all means, shut off new patients for a while.
Good example, I had a potential new patient want to come in and "interview me" to see if would be an appropriate physician for him. I said... "No." That one word got me home 20 minutes earlier.