Bite off more than [one] can chew

Bite off more than [one] can chew:

 

Definition:

Take on too much responsibility.

Example 1:

  I bit off more than I could chew with this project.

I took on too much responsibility with this project.

Example 2:

 

She bit off more than she could chew by working at two jobs.

She took on too much responsibility by working at two jobs

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