I'm just throwing a thought down on the table here. What would happen if you tried visualizing reality checks during the day alongside doing them physically? This would mean you would first to the action (lets use the finger though palm one) You would stick your finger to your palm, feel it hit then imagine trying the same thing in your mind (with both visual and tactile input) and have your finger go through your hand.

This would mainly condition you to have the RC succeed when in a dream and help you to be able to RC more often in a dream. Also, for everyone here that daydreams alot, try RCing at the start of each daydream to get used to doing it for dreams in general.