Have you ever read short stories or short sentences with a sloppy morale like be yourself or live in the present. I mean, in fact, these may look like good advices or like it's the right thing to do. But more often, they're not applicable or you can't really tell for sure if you do or if you don't. That's why I say they're sloppy. They exists to make you feel better about yourself so you can believe you're living in the present while still having fights over old events with your ex-husband/wife. Or thinking you're honest and the next thing you do is to call in sick over a lie.
The truth is, and it's sad to say so, people tend to believe they're better person than they actually are. Don't get me wrong, I'm no psychologist, but it may looks like it's a defensive mean and it's a good thing. As a philosopher, I think it's like the fog before your eyes. It prevents you to see clear. You can't help it, but what you do is to lie to yourself and you believe that very lie so you think it's the truth. Don't you think it's pathetic? If you don't, I do. Let me explain you why.
What does growing means? Does it means to get older? I think not. Does it mean to get futher in life like becoming a father? I think not. Growing is about getting better, becoming wiser, being able to use more and more tools out of the lessons life taught you. Do you see what I'm trying to tell you? How can you get better if you lie to yourself about how good you are? How can you grow? No offense meant, but it's a bit stupid don't you think?
Having said that, I do think you're better off telling yourself the truth, even if it hurts, than lying to yourself to manage your feelings about you, about the way you see yourself as a human being. I'm not telling you to never lie. I think it's impossible to never do. But you should never do it to you. You owe this to yourself so you can grow.