Not the original poster, but I do the same. I have a private "therapy/ranting journal" that I use to just write out all my negative thoughts and dump it in there. I find it extremely safe and refreshing to do so. It's mentally the equivalent to me as "throwing it away" because I don't keep my negativity journals. Even if you don't throw away the journal I still highly recommend the practice. It's honestly helped me get through so many difficult situations.