Your Desires form thoughts and thoughts are what motivate you to act. All desires begin in the heart. "For as he thinketh in his heart, so is he." (Proverbs 23:7) What do you desire? How do these desires affect your thoughts and actions?
If the heart is the core of who you are and shapes who you become, it is likewise the center of your emotions, influence, and change. Every experience in life affects the heart. With these emotions you can choose to express them, run from them, bottle them up, or allow them to empower you.
To fully express what is in the heart takes a lot of humility, confidence, and trust. The source that so easily shapes you can just as easily be damaged. If the possibility of hurt, criticism, or denial exist why live a wholehearted life? Why show your true self? Why take the time to discover the depth of your own heart?
Brene Brown is a research professor at the University of Houston. She has written several books on the power of vulnerability and living a wholehearted life. This is one of her insights on the power of the heart: "Courage is a heart work. The root of the word courage is cor - the Latin word for heart. In one of its earliest forms, the word courage meant "To speak one's mind by telling all one's heart." Over time, this definition has changed, and today, we typically associate courage with heroic and brave deeds. But in my opinion, this definition fails to recognize the inner strength and level of commitment required for us to actually speak honestly and openly about who we are and about our experiences -- good or bad. Speaking from our hearts is what I think of as "ordinary courage.""
So little of what you do is through your own efforts. Every day we all must rely upon God for strength and guidance. "...For ye have not come thus far save it where by the word of Christ with unshaken faith in him, relying wholly upon the merits of him who is mighty to save." (2 Nephi 31:19, Book of Mormon)