What is Destiny?

It is often said that, "We people, are doing or achieving things as per our carved Fate or Destiny". But, now the big question is, who carves our destiny? Is it the Almighty or We, ourselves define what to do & what not to?

This has been an ongoing debate for almost like centuries & I’m no one to make a clear cut distinction between them. But I've been trying to convince people around me to believe in their KARMA instead of praying to someone who may or may not exist. There is short story which may pour some light on this topic.

Once, A great Japanese warrior named Nobunaga decided to attack the enemy. Although, he had only one-tenth the number of men the opposition commanded. He knew that he would win, but his soldiers were in doubt.

On the way he stopped at a Shinto shrine and told his men: “After I visit the shrine I will toss a coin. If heads comes, we will win; if tails, we will lose. Destiny holds us in her hand.”

Nobunaga entered the shrine and offered a silent prayer. He came forth and tossed a coin. Heads appeared. His soldiers were so eager to fight that they won their battle easily.

“No one can change the hand of destiny,” his attendant told him after the battle.

“Indeed not,” said Nobunaga, showing a coin which had been doubled, with heads facing either way.

Well, one can still say that, "it was his destiny to have a double-headed coin". But, it was the KARMA of Nobunaga & his soldiers that helped them win the battle.