In the context of goal setting, the importance of knowing yourself and, more specifically, what your strengths and weaknesses are cannot be overstated. The more accurate your self-assessment is, the greater the chance you will have to be successful.
Pay attention to compliments and criticisms you receive from people you live and work with. These can help you identify areas of strength and weakness that you may not even realize you possess. Whether a strength or a weakness, you are better off knowing about it than being ignorant about it.
You may need to develop professional skills in order to accomplish your goal. For example, suppose you have been working as a computer IT professional and your goal is to start your own real estate firm.
Because you have no professional experience in the real estate field, you need to identify the professional skill sets and qualifications you need in order to practice as a real estate professional.
Once those additional skills are identified, you need to take the steps to acquire them.