The very first step you need to do is to talk with yourself in English only. The thoughts that arises in your mind should be in English rather than your native language. You'll feel the difference. Btw, @arbitrarykitten told some incredible hacks that will really make you fluent.

The experts agree- the best way to learn a language is to immerse yourself in it. Whether you pay for classes or find free resources you need to practice it constantly daily: listen to it and speak it and use it.

Absolutely true! This rule applies to learn anything faster and retaining better not only language. A person who immersed himself passionately in a specific task continuously for a month without being lazy will learn more and be better at it than a person who spent six months but not did it without passion and whenever he found the time to do it.

Best wishes.