Where do you stand?

There is a fine line between the two

Change - to make the form, nature, content, future course, etc., of (something) different from what it is or from what it would be if left alone: to change one's name; to change one's opinion; to change the course of history.
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Quit:

1.to stop, cease, or discontinue: She quit what she was doing to help me paint the house.
2.to depart from; leave (a place or person): They quit the city for the seashore every summer.
3.to give up or resign; let go; relinquish: He quit his claim to the throne. She quit her job.
4.to release one's hold of (something grasped).
5.to acquit or conduct (oneself).
6.to free or rid (oneself): to quit oneself of doubts.
7.to clear (a debt); repay. –verb (used without object)
8.to cease from doing something; stop.
9.to give up or resign one's job or position: He keeps threatening to quit.
10.to depart or leave.
11.to stop trying, struggling, or the like; accept or acknowledge defeat. –adjective
12.released from obligation, penalty, etc.; free, clear, or rid (usually fol. by of): quit of all further responsibilities.