Dude here is the HELP:
1. Understand it won't stop immediately. When you are obsessed with Southwest, it is a bit like addiction - it won't go away overnight. Start by slowly stopping. If you try to completely stop, at first it won't work. After you feel the obsession is easing off, stop some more.
2. Find something else. Try to be obsessed on something else, maybe where you work. It helps if it is something your friend is obsessed about. If you can't get obsessed with it, just pretend you like working at Alaska. When you start forgetting about the other thing, stop going on about both of them.
3. Take away reminders. If you have stuck pictures of Southwest Specialty Aircraft all over your wall or something, start taking them off. Remember, though, that like everything else, if you do it straight away it won't work. The more gradually the better. Anything that is going to remind you of the obsession will not help.
4. Make sure you know you want to. Remember that almost everyone is obsessed about something, be it lampposts, cars or celebrities. Do not be ashamed of an obsession, but understand that one will just lead to another.