The song's accompanying music video was directed by Brett Ratner and features Cyrus performing the song with a back-up band as many teenage girls lipsync along.
The girls clutch a variety of props, such as love letters and snow globes, inspired by personal items Cyrus' ex had given her.
The review continued that it was mildly angry, comparing Cyrus to "a watered-down version of Avril Lavigne's kid sister, and Lindsay Lohan's pseudo-rebellious character in Freaky Friday — minus the eyeliner". a 15-year-old suffering her first serious heartbreak, basically." Cyrus began promotion for "7 Things" in Europe in fall 2008, performing the track on the United Kingdom channel GMTV, the French television show Le Grand Journal, and the British singing competition The X Factor among other venues.
Molly Lambert of the New York Times described Cyrus as the video's "charismatic center" and writes, "When she flashes Nick’s dog tags and a picture of the two of them together, she seems so vindictive and so embarrassingly vulnerable, just like . Cyrus performed "7 Things" along with several other songs on April 24, 2009 in a London Apple Store.
In the video for '7 Things' she wears Nick’s diabetes dog tags while singing about how his vanity and insecurity undermined their relationship." Jessica Herndon of People similarly points out the necklace and the fact that Jonas, "who split with Cyrus in late 2008 after two-and a half years of dating – has Type 1 diabetes and is a spokesperson for awareness of the disease." "[W]ith '7 Things,' I think a lot of people do, you know, think it’s about Nick Jonas, and if they think it is, that’s fine, or whoever they think it’s about.
As Cyrus continues to sing, she is replaced by more girls holding different items, including teddy bears, stuffed animals, snow globes, and love letters.
So it was awesome to get to do that and just kinda go through all the different stages of what's been going on the last couple of years. I didn't even mean for it to be for, you know, the record or for anything. I got into it and I played some of it for my sister and she was like, 'dude, that's awesome'.