To journal is to make spending time with your own thoughts a priority. In a busy world where there never seems to be enough time to do all the things that must be done on the never ending to-do list, carving out time to journal is a form of self-care.
To love self.
Even if the thoughts or words that go from mind to paper are not necessarily loving, getting those thoughts out is like venting. A sort of emotional and mental pressure release valve. It is better to release the pressure than to hold it in.