To journal or journalize is old. It dates back to the mid 1700s and is not American.
Journal is from the French - papier journal - a day book. Diary is from Latin.
OED Journalize: To enter, record, or describe in or as in a private journal.
1774 Fanny Burney ( English writer )
Willingly ... do I comply with your request of journalizing to you during my stay at this place.
1775 Joseph Jekyll (English lawyer and politican, related to Gertrude Jekyll).
A little tour I had made for a week, and which I shall journalise after I have thanked you.
Journal as a shortened version, is first recorded in 1803 by English dramatist James Kenney. He produced more than forty plays and opera libretti and was a friend of Dickens and Thackeray.
Journaling has become a very popular activity to help with mental well-being and is often combined with art forms: drawing, painting, calligraphy, collage etc.
Helen Colebrook is a publisher author and well-known in journaling circles. She has a popular You Tube channel and works with Cult Pens using and promoting their products.
She's a little different to many of the art journalers on YouTube as she actively uses her journals to organise her busy days and weeks as well as documenting her thoughts and experiences, all illustrated by her art work.
In some respects, it has become an extension of card-making which was also very popular at one point but may be less so now.