Writing is very important. Its effective, it has long lasting effects. I hate phone call, as I find it's over-rated, it obviously has lots of use, but its counter productive in many case.
And now in the year 2016, its so easy to write. Write for yourself, take a piece of paper, open up a notes, or Evernote. If you are ready to write for others, start a blog, and WordPress make it very easy for anybody, does not even cost a dime to start.