A wonderfully simple but very effective way to create that mindful pause.
Before entering a room simply:
pause, feel your two feet on the floor, and take one mindful breath.
Then continue into the room.
This is especially relevant before entering a room in which you will be called upon to be fully present and awake to what's going on. This practice was designed to support doctors in their interactions with patients. The doctors were encouraged to do the Two Feet and a Breath practice before entered exam rooms. Preliminary evidence suggests this can lead to a great improvement in the patient-doctor conversation.
Read a New York Times op-ed describing this work with doctors here.
Download a PDF describing this practice and also serving as an attractive reminder to do it.