I think it is imperative to learn journaling, and could be extremely useful in venting frustrations that you wouldn't be comfortable sharing in polite company. Do you relate to the common struggle with a billion thoughts in your mind hindering your feelings to be identified aloud? Maybe journaling can also do the deed.

In my personal experience it was something I did when I was younger but picked it up again with increasing daily stressors necessitating journaling my thoughts, especially since I spend quite a bit of time alone and am sensitive about people overreacting or the possibility of people abandoning me in my most vulnerable moments. I'll go overboard when complaining about difficult people or circumstances, so those pages will go out once I'm past the moment, but for the most part, I take a look at myself now and myself journaling and see growth!