be etched on (one's) mind
To be something that one will always remember. The day you were born is just etched on my mind—I could never forget what it felt like to hold you for the first time.
be etched on your ˈheart/ˈmemory/ˈmind
be something that you will never forget because it affected you so strongly: The image of their son holding up the championship trophy would be etched on their memories forever.