I heard the advice once to write drunk and edit sober and while I don’t drink much anymore I think the general idea can be applied to answer your question. My advice would be to spend a lot of time writing from the heart, basically writing the first thing down that comes to your mind and not worrying about grammar, organization or structure. This can be very therapeutic but probably at lot of it you would not want to publish. But then the “edit sober” part meaning using the mind to take all the rambling and organize into something more organized and useful that you can post and publish for others.