You might consider picturing a scene from your favorite book, or a location in real life that you visit often. Otherwise, if the RC thing is a problem, try sticking your tongue though the roof of your mouth or tightening your throat to see if you can still breath.

Not sure what else to suggest, since getting sucked into a pre-determined setting is how I handle WILDs.

How long have you been trying this? Practice makes perfect, as they say.