English to Italian Social Sciences General / Conversation / Greetings / Letters self-help book on regret

Care colleghe, cari colleghi,
non riesco a decidermi sulla resa del termine "trapdoor" nel contesto che riporto di seguito, tratto da un manuale di autoaiuto per superare i rimpianti. Ho fatto la stessa domanda ai colleghi madrelingua, che propongono soluzioni diverse...
https://www.proz.com/kudoz/english/general-conversation-gree...

Voi come tradurreste questo termine?
Grazie mille per ogni suggerimento!
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We Expect Chain Reactions and *** Trapdoors ***
A common error in thinking about outcomes is to imagine a chain reaction of negative events that end up in catastrophe. For example, a person considering taking a new job might imagine that the job will not work out. She then imagines losing the job, being out of work, losing all her money, and ending up homeless. This chain reaction of negative events adds to the fear of making a change
(...)
Related to the sudden change of chain reactions is the belief that if we make a change we will be surprised by *** falling through a trapdoor ***. We sometimes think that something terrible will surprisingly and suddenly happen and we will be devastated. This might include your belief that if you make a commitment to a partner or a job you will be blindsided by betrayal or the company going bankrupt. Or you might think that if you buy a house or make an investment the entire market will collapse and you will end up with nothing.

CHALLENGE: Remember that there are dramatic changes that occur in relationships, companies, markets, and elsewhere but they are not the norm. If you go around predicting *** trapdoors *** every time you think of making a decision, you will never get out the door and live your life. You can walk through the door without falling through a *** trapdoor. ***