Eleventh-hour decision noun phrase
A decision made at the last possible moment
The government has taken an eleventh-hour decision to withdraw all troops.
They reached an eleventh-hour decision after weeks of controversy about the sitting of the new airport.
If one stands pat on something, he or she sticks firmly to it.
Make a decision.
Make a decision based on one's feeling or intuition
To decide too hastily; to throw something away after encountering a setback
To think it is suitable to do something.
 
If a person has the devil's own luck, he or she has extremely good luck.
A: Yesterday I won a $10 million lottery jackpot and today I won a car in a draw. 
B: You have the devil's own luck.