The phrase “at my wits’ end” means to be in a state of extreme frustration, confusion, or anxiety, where one feels they have exhausted all possible solutions or options to a problem and are unsure what to do next. It often conveys a sense of desperation and mental fatigue. When someone says they are at their wits’ end, they are expressing that they have tried everything they can think of to resolve a situation but are still struggling and feel overwhelmed. This expression highlights the limits of one’s patience and problem-solving capabilities.