When you slip up, notice if you jump straight to a global label: "I'm a failure," "I'm a bad person." That is a moral judgment, not an accurate account of what happened. Swap it for a plain assessment of the specific event: "I made an error here; what can I learn from it?" The mistake stays about one action instead of becoming proof of your worth, and the shame riding on the label eases.
Three Breaths
Breathe — Notice the harsh verdict you've passed on yourself.
Breathe — Strip out the insult and keep the factual part.
Breathe — Restate it as a plain assessment you could act on.