Having prior IT knowledge and skills will be always a plus when trying to get in to cybersecurity. If you can write a code, reverse engineer a piece of software, or at least understand the basics of networking, OSI layers, and so on, that will surely be an added advantage.
Having a technical background does not mean you should have an official degree or certification, but could instead mean that you have a few basic skills that you gained from your hobbies.
If you don't have those skills now, you should atleast know how to gain those skills since you've read every single chapter of this book.