Wraithe, 
So, #MastodonTips/#FediverseTips
Bookmark your own postsif you write a post, and you think you phrased something particularly well, or you had an epiphany of some sort: Bookmark that sucker
Sometimes, if you are replying to other people in a thread, it can be much harder to find the post later if someone deletes a message in that thread.
Absolutely feel free to bookmark your own posts. I mean it’s not like anyone else sees your bookmarks to judge you anyways 😀