on Writing Forward:
A journal is a log, usually with dated entries. Some journals are topical (dream journals, travel journals, freewriting journals), while others are left open to explore just about anything.
Many topical journals are meant to improve the quality of life. For example, people who are working to lose weight might keep a diet and exercise journal. Folks who are focused on professional success might keep a career journal. Parents might keep a journal of their children’s development. But there’s another type of journal that suits just about anyone, writers and non-writers alike, and that is the gratitude journal.