How can I filter out my tickets here?

I assume you are talking about here on the tech forum.  Click on your name in the upper right corner and select 'Profile'

Then you will get a page with your info and a Recent Discussions list.  Those could be discussions you started or just commented on.  Under that header you choose: Most Recent, Newest Topics, Most Likes, Solutions.  Altough it doesn't sound it I think 'Newest Topics' is actually filtered to only topics you started.

Well, hint #1 -- a little more information would be helpful. Ideally, let us see the workbook where you're seeking to accomplish this filtering. You don't say enough in that sentence. Is this a corporate system of some kind? What is it that you're "logged in" to? And so forth,