The quote emphasizes the importance of emotional engagement in life, suggesting that in order to move forward and embrace experiences, one must invest their heart fully. It compares this emotional involvement to the fundamental act of breathing—something we do instinctively without thought.
Just as breathing is essential for life, leaving one's heart in situations is portrayed as a natural process that enables personal growth and progression. The message encourages individuals to immerse themselves authentically in their relationships and experiences to truly enjoy life.