I think writing is an excellent way to heal and process your thoughts and emotions. I also agree that perhaps starting with a word document is enough in the beginning. Then after some time passes you can edit, re-think etc and once you're fully satisfied publish it.
What might work well is first write long entries. As long as you can, with every single detail, emotion, etc. Then as you edit, make it shorter and shorter, eventually only leaving the main points that have been polished to maximum form.
Give yourself a limit, perhaps one page per entry and then publish. Also, keeping it shorter will get more readers to actually read. People are lazy.