It is by giving our whole hearts to the Master and keeping His commandments that we come to know Him. In time, through the power of the Atonement, our hearts are changed, and we can become like Him.
The Holy Ghost will testify to our hearts, and the hearts of those gathered around with us, what He would have us do. And it is by keeping His commandments that we can have our hearts knit together as one.
What we want with all our hearts will determine in large degree whether we can claim our right to the companionship of the Holy Ghost, without which there can be no spiritual nourishing.