We can’t argue that reading books is necessary to succeed in all areas of life. It is said that knowledge is power, and this is a true statement, especially in language learning. Ask any English student how they felt after reading their first book in English, and you will see my point. Being able to fully understand a book in English will give you a true sense of fulfillment.
It is my true belief that you should not learn English by memorizing tables and vocabulary lists but rather by context, and for this, you have to develop ways to learn passively. One way of doing so is by watching TV; however, if you prefer to feed your brain and develop a new positive habit, then reading books is definitely the way to go.