What I found is while doing the paraliminals. I affirm to myself that now is the time that is chosen to do this and that there will be plenty of time after for other thinking. And after that realization I seem to stay with the paraliminal my mind dosn't wonder then. The other thing I do is let the world take care of itself while I do a paraliminal both distractions disappear for me.That little technique lets me stay in the moment.
Also this tecnique is applied to areas of my life where I want to put effort.