I can give you the King's English and then I can take it to the street, but do both or do one and don't do one knowing only the street. That's going to hold you back because what comes out is going to impress people, and it will impress them negatively.
“I still owe a duty of loyalty to my clients and former clients, so I cannot specify which clients I did not especially find congenial, but the cause was the same.”