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A creature of habit
 is someone who likes doing the same things over and over again and follows the same routine every day. They don’t like change and prefer things to stay the same.
Examples:
1- Steve Jobs was a creature of habit, wearing his iconic black turtleneck and jeans combination every day, a deliberate choice to reduce decision fatigue.
2- When it comes to vacations, Jack is a creature of habit—he always books the same hotel and visits the same beach every summer.