To dream of being at tall height represents a heightened sense of achievement. You may feel superior to others in some manner. You may also feel that you have overcome an enormous challenge or worked very hard to get where you are. Reaching the pinnacle of success or a challenge. Heights may also reflect insider knowledge or feeling smarter than others.
Negatively, heights may reflect feelings of danger or risk as you are working towards a goal or achievement. Fearing losing what you have achieved so far as you continue to make progress.
Dreaming of a fear of may reflect a fear of success or that you are not believing in yourself enough. Feeling that you are not as good as others think you are. Fearing that you are unable to maintain your success or that you are unqualified.