There are many stories that I have heard when the Deity is not pleased with the person who is chanting. What is the right attitude and right method of chanting?

Swamiji says:
The best attitude I can suggest is:
Dear God,
I am going to do the best I can to please you through my worship. If you are pleased, then please grant me the fruit of my worship. If you are not pleased, then please teach me how to worship in such a way that you will become pleased.