I have a reminder on my phone and notice to do a reality check every time I look at my phone, which is good. But I am unsure which realiy checks to make a habit. At the minute I just think to myself "is this real, is there anything wierd around" and then look at my hands if not too many people are around to wonder what I am doing (lol) and then I look at my left and right writst to check for a tiny freckle on each arm.