How do I show a list of only the posts that I started?

The title says it all.

Go to your own profile page and then click on the 22 posts created link.

https://forum.kicad.info/u/pablomack/activity/replies

Or this button with your own topics:

https://forum.kicad.info/u/pablomack/activity/topics

You can also do forum search for “in:created”.

And then: