Yes, I have kept a journal for many years. After the loss of a loved one several years ago, I began to express my feelings through writing. Putting your thoughts down can help you channel energy. Whether it's good or bad feelings, mixed emotions, anxiety or fear. Keeping a journal is a self expression of who you are at times, and what you destine to be.
I do not keep a journal but I can certainly understand why some one would keep one and I recon I might have attempted a few times in the past to start one but it just never stuck I guess maybe because I am just to be busy of a person.