By lying to your boss, you make a rod for your own back.
rod for one's back
idiomThe means of one's own punishment or downfall.
If you promise to finish this project by tomorrow, you are making a rod for your own back.
By refusing to delegate any responsibilities to his team, the manager inadvertently created a rod for his own back when the workload became impossible to manage alone.
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abound in one's own sense
To follow one’s own inclinations and opinions.
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ace up one's sleeve
A surprise advantage of which others are not aware.
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act one's age
To behave in a manner appropriate to one's age.
- 04
act one's age, not one's shoe size
Synonym of act one's age (“to behave in a mature manner; to avoid being childish”).
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afraid of one's own shadow
Exceptionally timid.
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air one's dirty laundry in public
To reveal one's sordid secrets to the public.
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air one's dirty linen in public
Synonym of air one's dirty laundry in public.
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albatross around one's neck
A characteristic, possession, associate, or previous deed that hinders one's ability to succeed.