English is a language and this is a media to communicate your thoughts to the other person. There are many people who know little English or don't know English at all, still they are successful in their career. Japanese are called the best in the world; all there business & technology developments are in Japanese. Same with Chinese too. First and foremost, remove the fear of not knowing English. Fear is an emotion that hold you from learning. Move away from the "Emotional domain" to "Intellectual domain". Start working on what next: There are many ways to train yourself to talk fluently any language of your choice, let alone English. Take this as a challenge and work on the same (read English novels, there are many English speaking videos on Youtube. Eg. https://www.youtube.com/watch?v=XCEAl6EAPR4 One of the reasons for not able to talk in English is, we think in vernacular language and talk in English. There is a gap in your mind while trying to translate from what you think to what you want to speak. Train your mind to THINK in English and TALK in English. This sounds complicated, but simple when you practice. Good Luck.