Joseph Fielding Smith taught us something about praying with real intent when he said,

“I have never had very much confidence in the proclamation or the request that was made asking the people of this country to pray for peace, for the very good reason that it was not sincere. We cannot pray to the Lord and say: ‘Listen to our cause, bring victory to us, do what we want you to do, but don’t ask us to do what you want us to do.'”

“Power of Repentance”
October 1944 General Conference