Natural order to learn
Reading, listening, and speaking are the most important aspects of any language. The same is true for English. However, speaking is the only requirement to be fluent. It is normal for babies and children to learn speaking first, become fluent, then start reading, then writing. So the natural order is listening, speaking, reading, then writing.
Submerge yourself
Being able to speak a language is not related to how smart you are. Anyone can learn how to speak any language. This is a proven fact by everyone in the world. Everyone can speak at least one language. Whether you are intelligent, or lacking some brain power, you are able to speak one language.