A lawyer may lose the trust and confidence of a client for various reasons. Although the client may become dissatisfied, the circumstances may not constitute grounds for disciplinary action. A lawyer may be disciplined only if the provisions of the Rules of Professional Conduct have been violated. An honest disagreement about how a case should be handled or should have been handled does not constitute misconduct. Neither does a mistake.
Lawyers are human.
Sometimes they make mistakes just like everyone else. If the mistake causes a loss, the client may be able to recover the loss from the lawyer through civil remedies. But a mistake or an error in judgment are not unethical conduct. Finally, there are situations which a client may find very annoying, but which do not constitute misconduct. For example, the lawyer's failure to fully explain what is going to happen to the client's case, or perhaps the lawyer's failure to respond to the client's telephone calls inquiring about the progress of the case.