A lot of people who writes blogs, most of them uses blogs as a form of journal/diary. They write how their day have been, what they have done, what they are planning to do next, e.t.c... And a lot of them also writes down their thoughts and feelings. The only thing with blogging online that differs from a journal/diary book you keep at home, is that other people can check out what you have written online as well as comment on it. While when you write a journal/diary most of the things you have written will be kept private as long as you do not let other people read in it.