[Android Central Question]

There's a donut by all my messages I send to people on my text messages

[SpookDroid]

I assume you own a Samsung phone. That donut is your profile picture in the Samsung Contacts app. You can change that by opening the Contacts app and tapping on your contact picture (should be at the very top of the list). If you enable Profile Sharing in the app's settings, then other Samsung users would see the change in their phones (if they have you in their contact list). Non-Samsung users don't see your profile information.