Used to express deep personal feelings, often about topics that strongly affect one's life. Guarding the environment is near to my heart, as I grew up in the countryside.
Pro Tip 2/3
Not Always Literal
The phrase can be metaphorical, not meaning physical closeness, but emotional connection. This old guitar is dear to my heart; it belonged to my grandfather.
Pro Tip 3/3
Possessive Nuance
Can imply a sense of personal responsibility or a desire to protect what's mentioned. Child welfare remains close to her heart; she was once a foster child herself.