Here's a link to the FAQ on this subject:

https://forums.psychcentral.com/faq....q_editingposts

It's the second section from the bottom of the page:

"How can I edit my own post? How can I delete my own post?"

Within the "window of opportunity", so to speak, you can delete your own post by first clicking on "Edit". The screen will come up where you can either edit what you wrote or delete it. Instructions on how to delete are provided. Once the "window of opportunity" has passed, you have to personal message a moderator as is noted in the FAQ. Hopefully that's the information you were looking for.