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Everyone "messes up" from time to time.
Some weeks it might be a daily thing!

That's part of being human.
Only One is perfect,
and it isn't you nor me.
What makes a difference when you do mess up
is the way you think about it later.
Is there any good in berating yourself
after the fact? No.
Is there any good in blaming someone? No.
A good way to think about the error
is to accept that it will happen (humaness)
and also because we're human,
we can make amends. If it's been against
a person we erred, we can ask for forgiveness.
Something that weights the apology
is to give a thought about what you learned
from your error.
This is true even if it only involved yourself.
(Self acceptance is key.)
Even a voiced thought such as, "Well I know
not to it that way again" gives yourself (and
others?) hope and plants a good thought
for the next time.
Don't beat yourself up
when you mess up.
Look at the situation from afar
and evaluate how you want to do that
better in the future.
Then move on.
Peace.