Your question is Negative Self-Assessment. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Tell me something that you consider as a negative trait of yourself. Choose a genuine weakness that has affected your work, explain how you recognized it, and describe the concrete steps you have taken to improve. Focus on a specific example and the resulting change rather than offering a disguised strength or a generic personality label.