Every time I do exercises that'll aid my prospective memory It'll always come back to the surface of my mind.

For example: I'll tell myself 'next time I see a kettle I'll tap the sink 17 times in a row'

(After telling myself this after half an hour 45 minuets It'll just come to the surface when there's no kettle around).

I've tried using video games to help me put it at the back of my mind lets say 'after this match I'll move the lynx spray to the weight bench' but it still surfaces to me mind even before the match ends.

Any tips would be amazing thankyou