“Once doesn't form a habit, Juan thought as he left the chief's office, and when they transferred him to Section J where they unfold the
letters with infinite care to see if they contain poisonous powder, he felt
that he had ascended a step and could return to his healthy habit of not getting involved in external affairs” He think he's making
the right choice by turning in the letter but in the reality he's making the
wrong decision because it's dangerous for him as people has been
poisoned with poisoned powder.
“Naturally he condemned it without remorse. And just as naturally
I
he couldn't prevent them from executing him at dawn, one more victim
of his devotion to work.” Since he sent the letter he thinks it's right one
because but in reality It was the wrong decision because when Juan
found his letter to Mariana he censored it without regret. However he got
imprison and got executed the next day from not doing his job correctly.

Can someone help me explain my quote that supports my theme “ Sometimes when we think we’re making the right choices we’re making the wrong ones.”