Even if you are doing business with a family member, you need your own Raleigh contracts lawyer. Many entrepreneurs make the mistake of trusting the other party entirely and entering into haphazard contracts. Here are the common mistakes: Failure to Put it in Writing – Oral agreements are not ideal because the mind can sometimes misinterpret things or misremember. It is safer to write down the terms since it will remain as proof of what was initially agreed, and is also easy to enforce.