Self-Depreciation: Not as Good as it Might Seem

This is the kind of view one gets of oneself when they
take self-depreciating comments to heart instead of
holding to the Lord's comforting words.

    Am I the only one who's believed that calling oneself "stupid" after making a dumb mistake is just humble self-depreciation?
    It kind of seems okay. It isn't calling anyone else those names; just oneself, and it feels deserved most of the time. Such self depreciation (insulting, chiding, mocking) can be seen as self-discipline, an improvement strategy.
    Only now I'm pretty sure that "self-depreciation" isn't humble, helpful, or okay to do at all.
    For one, there's just something fishy about putting the responsibility of scolding (or complimenting) into the hands of the person who's going to receive it. It's too tempting to pass on the scolding, for one, and just ignore the problems. But a bigger issue is that when one puts themselves in charge of monitoring their own flaws . . . well, there are probably a lot that a person would never realize they had until someone else pointed them out.
    It's not our job to judge ourselves like that anyway. Discerning problematic attitudes and flaws that need fixing is one thing, but when one calls themselves an idiot (a vague insult) and don't even fixate on the issue that prompted the scolding, nothing is being improved. The only one who's really able to instruct us in how to change is the one who actually has the right to: God. He alone sees all the core issues that need to be addressed, He knows the correct way to mend those issues, and He instructs us on doing that in a kind, loving way, whether by people in our lives or by the Good Book.
    Which doesn't involve name-calling. That's another evident problem with self-demeaning. Typically, when a person scolds themselves, they mutter something like "idiot," and feel cruddy about themselves. But after that? Probably not much else.
    Which is eerily a lot like what the enemy does to us. In Revelation 12:10, Satan is said to be accusing us "day and night." Accusing, condemning. Drawing attention to all the mistakes, sins, all the bad, but not in a way that helps or gives hope. It only hurts.
    But God gives hope, healing, forgiveness. The salvation He gives has redeemed us from all our mistakes; another reason not to judge oneself with self-depreciation. Yes, we make mistakes, but we're redeemed from them. The amount of wrong choices we make even after accepting Christ is not going to annul that grace, but allowing self depreciating comments to fill our minds (and actually believing them) will definitely distort one's memory of it.
    God wouldn't call any of us "idiot," and He definitely doesn't want us calling other people things like that (see Matthew 5:22), so logically, it makes sense that He wouldn't want us calling ourselves that.
    So; personal conclusion? Calling oneself "stupid" or "moron" is probably not right.