"A lie is like a snowball; the longer it goes on, the bigger it gets." Martin Luther
The earlier in life we learn to tell the truth, the better will our life be in the long run. Honesty and humility being the inroads to knowing the truth of any situation. Bereft of these things, life is bound to get more and more complicated.
We're not meant to live a lie. Honestly, I don't have the scientific data to back up my assertions here, but I'm sure neurology would agree with me (I don't really care). When we choose to live a lie—an untruth, how ridiculous—I believe something happens to us physiologically. There have been times in my life where I know that what I'm telling a person is not the most accurate way to represent the facts of what happened. I think to myself great, now I'm gonna have to remember this version. Jettison all of that. If you've got nothing nice (or true) to say, then say nothing. Yes, Jesus is the truth, and the Holy Spirit is the Spirit of Truth, but it's only when we actively seek to know them through fellowship and interaction, do we begin to receive the authenticity that grows and branches out into the nodes that frondesce and effloresce and infructesce (pretty sure that's a word) with the fragrance and fruit of truth. Forgive my embellishment.
"I said in my haste, all men are liars" (Psalm 116:11) Well said, Mr. Psalmist. Hasty or no, it's true.
"Yea, let God be true, but every man a liar." (Romans 3:4) Men and women. Whatever, guilty.
Truth is, we're not that smart. We're not smart enough to mentally manage however many different versions of the same thing—the same story. I think it boils down to how much we know ourselves (and God, obviously). Reason I say this is because when we're at peace with who God says we are (warts and all), then we're able to field the (mis)perceptions we get regarding the things we want to say and show. We won't worry about embellishing something and making it look better than it actually is. We won't even feel the need to voyeuristically reveal the details of our lives, because, let's face it: We're not that big a deal. Notice what Paul says here:
"Of such an one will I glory: yet of myself I will not glory, but in mine infirmities. For though I would desire to glory, I shall not be a fool; for I will say the truth: but now I forbear, lest any man should think of me above that which he seeth me to be, or that he heareth of me." (2 Corinthians 12:5-6)
Paul had no reason to lie. He implies here that were he to lift himself up, bragging on the things which God had shown and done for him, he'd be lying. Maybe this is why the psalmist would say "in my haste". Because it's not about us. It's not about our achievements and the glory and distortion thereof. It's about what Jesus did. If anyone deserves glory and accolades ad infinitum, it's Him. Roll that around.
"Add thou not unto His words, lest He reprove thee, and thou be found a liar." (Proverbs 30:6)
Whenever we brag, it should be on God. What He's done, how He's made us both inside and out. These are the things that tell. These are the things that won't smolder and burn out in the long run. The truth of God will resonate and the Holy Spirit will back up our words with His witness. That's what He's here for.
"I am the Lord thy God, which brought thee out of the Land of Egypt: open thy mouth wide and I will fill it" (Psalm 81:10, emphasis mine)