Did not Lucifer and also the Rebel Angels fall from Heaven, the so-called Paradise where lives God tough but are Angels who did not betray? It really does not looks like falling is actually a factor.
Things like talking behind peoples back, being mean, and using a negative energy about you’ll make a negative impression to them. If this is the case, they will subconsciously decide you aren’t a good match for them. On the other hand if in order to worked on character, traits that people see admir