Whoah! I didn't realize this, may be it is so. I need to start building my portfolio. Is writing a blog recommended, even if I kinda of person who is not into sharing my feelings?
You don't have to share your feelings either. Just open a Medium account, or self-host Ghost/Wordpress etc., and document things you've learned, problems you've encountered, interesting discoveries you made etc. In my experience, this contributes to the learning experience.
Good luck in your journey!