Be etched on your heart/memory/mind
Definition 1 of 1
Pro Tip 1/3Emotional Weight
Indicates a deeply emotional and unforgettable experience or memory. 
His final words before leaving were etched on her mind.
Pro Tip 2/3Lasting Impact
Used when an event has a strong, enduring effect on someone. 
The day of the accident has been etched on my memory.
Pro Tip 3/3Personal Significance
Refers to something of great personal importance or significance. 
Her grandmother's advice is etched on her heart.