The document discusses the importance of the heart in finding happiness and peace. It states that [1] the heart is the key to connecting with our true spiritual selves and the "True Source" of peace and joy, not our brains or worldly successes. [2] When we open our heart, we can feel genuine calmness, lightness, and tranquility throughout ourselves. [3] Our heart already knows the truth and how to find lasting happiness; we just need to open it and let our spiritual hearts connect to the "True Source" of love.