If you are going to mention where you need improvement, it is very important to include how you are going to improve. This is similar to asking what is your weakness. If you mention a weakness, show them what steps you are taking to improve in that area. Finally, you must be certain it is ok to expose an area for improvement. I don't recommend doing this on your first review. After the first review, you will have a better idea if it will help to critique yourself.
This is a good answer because it shows the manager that you are capable of finding your own faults. It also has a step by step process with a timeline on how you are going to improve.
Timeline is important because it shows that you are not going to procrastinate. If someone says, I'm going to read this book, you don't know when they are going to read it. It is much better when someone says they will read this book within 2 weeks.
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