Yes, it is a good career if you are interested in ethical hacking and cyber security field but it requires a great knowledge of the whole IT field.
If you really want to enter in cyber security field you have to do your best to get into top otherwise you will walk away from this in no time.
It is my advice that if you are passionate about diving into the heaven of hacking you should start now and learn about IT as much as you can in less time because the technology is changing every second and security risks are also increasing day by day so think about it and start your career in ethical hacking.