If you don't think you're in denial, then you're probably in denial.

What does it mean to be in denial? Someone who is in denial won't take responsibility for their actions, or won't accept the fact that what they are doing is wrong. I don't know anyone who constantly takes responsibility for their actions, admits they're wrong, and takes the consequences with dignity.
If you've ever blamed a teacher for a bad grade, then you're in denial.
If you've ever been pulled over by the cops for speeding and then claimed that you weren't speeding, then you're in denial.
Just face the facts.