The most common and most likely answer to this crossword clue is the 14 letter word SELF-CRITICISM
S
E
L
F
-
C
R
I
T
I
C
I
S
M
More clues leading to the result SELF-CRITICISM
Buddy explains!

The straight part
We know that "The Role of the Superego" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case the role of the superego = self-criticism.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SELF-CRITICISM mean?
SELF-CRITICISM noun- Criticism of oneself.