When we think about the impact we might have on others' lives, it's never the things we think about. For example, one of my adult nieces recently posted on Fb about a favourite old movie, tagged her sisters, and remembered that it was a movie I had given them. One of her sisters has separately talked about some of the things we had brought them from our overseas travels, none of which I can remember.
One of my 17-year-old nieces commented that on her last trip to New Zealand, she remembered the most amazing (her words) dessert I'd made them, with chocolate trees (it was a chocolate mousse, with chocolate palm trees as decoration). To her it was important, yet until now, I have always remembered that mousse as an embarrassing failure, as it was the one time I couldn't get the egg whites properly mixed in, leaving little flecks of white through it.
We can't control how others will remember us, and they remember things we have often forgotten. So it just reminds me to be me, and not to try too hard. Because they'll remember the funny things, the small things, the things that mattered to them, not the things that mattered to me.