I changed default login to terminal and now I can't change it.

Now whenever I reboot my machine, the terminal is in the upper left corner and I'm not given the option to change my login choice. I've tried using "gnome-session" but I still can't get to my desktop. I'm pretty much a noob with this OS, as I've always used windows. Can anyone help? Thanks!

Update. Question resolved. I finally used the one command I hadn't tried- "EXIT". lol I feel really silly now.