Summarize and analyze a non-profit social media campaign mentioned below: 

FIVE-Year Old Selfie (Young Minds)

Young Minds is a nonprofit working to support young people’s mental health. In 2019 they launched the #5YearOldSelfie campaign on social media, which encourages the power of positive self-talk as users post a picture from childhood and write three inspiring things they would tell their younger selves. 

See the attached sample to get an idea.