Try not to equivocate. Never underestimate your opponent. Don't make idle threats, it undermines your credibility. Don't embarrass your opponent. On a weekly basis, review all your open matters to ensure that each one is being worked appropriately and that nothing has fallen through the cracks.
Loose lips sink ships.
Again, suggest to those prospective clients that if their case were such a sure thing those same lawyers would have handed it off themselves, and not put the onus back on the client to find appropriate counsel. Train yourself to understand and believe that your continued professional life could depend on such an instantaneous and accurate production of that accounting. Ensure that the law firm's checking account never has any client's money in it. Never commingle client's funds with your own. Not even for a moment.