This can sometimes occur if there is turmoil or interference within your life.. Often after drinking too much or having an argument etc. incoherence is detected and cleared.  You can have some fun with the system by observing what is going on in your life and see if it corresponds to what the HappyZapper works on...
Clients have informed us that this is quite entertaining attempting to correlate what is detected and what they were thinking of or what they were doing at the time...  It can even be used as a simple guidance system to help you navigate away from areas of concern...