Put on my big girl thong

Face up to what you need to do.
Synonymous with “adulting”.

I can’t sit here worrying about it anymore, it is time to put on my big girl thong and get this over with.

put in my textice

using a text message to let your supervisor know that you are quitting your job

Bob: Did you meet with your boss and tell him that you are quitting?

Joe: No I couldn't face him in person, so I just put in my textice.