Conclusion: Making It Personal
Using the four questions, make a list of skills and attitudes to work on. Then go to your bookstore or library and find resources to help you take corrective action.
Or, better yet, approach your boss with your self-assessment. Find out what resources he recommends. As I've said, this helps you stand out as a leader and, you might be surprised, your manager probably has some good ideas to assist you.
Self-assessment is primarily a personal responsibility. It is not meant specifically to help you directly with a performance review. The role of self-assessment is more for ongoing career correction, regardless of whether your company has a formal review system.
Self-assessment is something that you should do regularly. The four questions are just one tool that can help you effectively view yourself as your employer views you. In career development, that is always the most critical viewpoint.