Hypocrisy

If you have to justify your actions to yourself, you might want to consider if you have been acting hypocritically or not.

But then again, being a hypocrite is not a question of who, rather how much. Everybody is a hypocrite, although to varying degrees.

The important thing to realise is that if you frequently need to justify your actions, you might enter into the state of fooling yourself; and this may or may not be dangerous for yourself, but it definitely is dangerous for those who are getting affected by your actions.