What prevents us?

What prevents us?
Recently, while discussing some of the meanings of the term Paro (Pharaoh), we touched a kindred word Priya. Let me remind you what it means.
1st point: the gap internal drainage foreskin circumcision;
2nd point: exposure, disclosure, disheveled hair. Kabbalistic aspect of this has a negative connotation - unwanted, premature disclosure of Light unprepared, which entails partitioning.
And now the "salt" of this note. Word Priya is a major part of the verb leAfria - "interfere".
That is something that prevents, of course undesirable (point 2) and otsekaemo (point 1).