I also keep a journal. And just like you and tcmoon52 there are a lot of gaps. But I don't think the importance of writing a journal is making sure you don't forget to make an entry. The whole point is to get to know yourself, a self analysis of your ups and downs, the way you handle difficulties, maybe a notation of someone's advice etc..

Over the years my ability, if you will, to make entries on a regular basis has improved as well as my understanding of my episodes. I believe keeping a journal, blog or what have you could help others understand themselves if they just stick with it.

I hope you have a pleasant day...