Dreaming of jumping off tall building is a kind of warning as per dream interpretation and meaning. It means in near future you will be overpowered by emotions or anger. You will react or act without thinking and it will be suicidal. This will cause problems in relationships and it will also hurt your body.
After dreaming of jumping of tall building you need to start behaving responsibly. Try to avoid all kinds of provocations. Whenever someone hurts you with words or actions try to ignore them. For a period of time it is better to keep yourself low.
After dreaming of jumping of a tall building you need to be careful with all kinds of romance matters. Be prepared to hear something worst or see something you did not want to see.
You must also know that all your desires cannot be fulfilled. You will need to get in touch with reality. Not all costly things can be yours.