Be left to (one's) own devices phrase
"To leave someone to their own devices" is the active form of the phrase.
To allow someone to do what they want without assistance or other interference
Leaving my son to his own devices is also a way helping him to grow up.
I was left to my own devices when I turned 18.
After 1 month of training, my manager left me to my own devices.
I left him to his own devices to see whether he is reliable and responsible or not.
I was left to my own devices when my parents were away.
Someone stands firmly in a place without a help and his or her face looks stupid.
Make a decision.
A decision made at the last possible moment
To think it is suitable to do something.
1. Used to say that someone missteps or stumbles while walking.
2. Used to say that someone makes an unwise, miscalculated, or blundering act or decision.