Prof. McGowen of the Legal Ethics Forum blog, provides a list of "5 Rules of Survival for Lawyers"   to students in his legal ethics class. They are useful for practicing Delaware lawyers too, even those engaged in business litigation. Here they are:

The best way to avoid trouble in the real world is to follow these rules of thumb:

1.     Never create a duty you don’t want to create
2.     Always be prepared to walk away
3.     Assume everything you do or say will become publicly known
4.     Never mistake the client’s problem for your own
5.     Never do as a lawyer anything you find repugnant as a person

Here is the link to his additional commentary on the rules: Legal Ethics Forum: 5 Rules of Survival