There is always a choice. To solve a problem or just do nothing.
The difficult part is to define a problem and don't make a problem
from nothing.
Self-deception is so common. We experience it all the time in
those who are close to us inasmuch we consider ourselves immune to
that.
In Christian belief there is a good practice called an examination
of conscience. You sit down alone in quite place and think about what
you have done. And listen what the inner voice tells you about right
and wrong.
More convenient title for this would be an examination of one's
past. We can't change the past but insted it changes us. Burns us from
within or makes us better. The former scenario comes from denial the
latter through confession.