I do a lot of private journal writing. I find it helps me to sort through my thoughts and feelings. One technique I've been doing a lot of recently is writing unsent letters to people. You write a letter to someone, but with no intention of ever sending it. It just goes in your private journal. But you write it as if you are actually writing a letter to that person, but being able to say everything you want to say to them. It can be really powerful. it allows you to fully explore your thoughts and feelings about someone as if you were confronting them directly, but with no consequences because they will never get to read it. I use Penzu.com, which is password protected, so I can really let rip whenever I write in my journal.