It is Finished

What does "It Is Finished" mean? What does it mean for me? What does it mean for you?

John 19:28-30 Jesus knew that his mission was now finished, and to fulfill Scripture he said, “I am thirsty.” A jar of sour wine was sitting there, so they soaked a sponge in it, put it on a hyssop branch, and held it up to his lips. When Jesus had tasted it, he said, “It is finished!” Then he bowed his head and gave up his spirit.