Understand that 'heart and soul' might evoke strong emotions as it's associated with deep commitment. The volunteers are the heart and soul of the organization, tirelessly working for the cause.
Pro Tip 2/3
Figurative Use
Remember it's metaphorical and not referring to an actual heart or soul. My grandmother's recipes are the heart and soul of our family gatherings.
Pro Tip 3/3
Intangible Qualities
It often describes qualities that can't be touched or seen, like love, spirit, or dedication. His kind gestures showed the heart and soul of his character.