If you are comfortable, You are not growing
Challenge yourself to grow yourself!
We only grow when we learn new skills. Some of these skills will make us uncomfortable. We tend to get used to the status quo and resist change. You have to push yourself beyond your comfort level to grow. Many people are afraid of public speaking, but you cannot have a successful career without giving presentations. Many people avoid writing, but writing is essential to share your ideas.
Say you want to learn to speak in public or write better, you should seek education in that area to learn how to do it. People learn in different ways; they can watch videos, read books, listen to lectures or take courses. Do what suits you but treat that as a skill to learn too. It is good to be able to learn from different mediums.