As a continuation of what I said here.
Another skill that will make you indispensable is speaking. When you know how to speak effectively you can easily get your point across and speaking well also comes with the added benefit of being able to communicate with people.
I believe that you’ll become valuable as a human if you learn how to do that.
So, go learn how to write, then become a great thinker, after that’s been achieved you should share your knowledge and wisdom with others by becoming an effective speaker.