"Are you thinking that maybe you want to be an astronaut, or an author, or a scientist or a doctor? That's great! And maybe you're not quite up to speed on the centrifugal force of the moon or how many bones are in your arms, but if you believe in yourself, you'll get there. That's the power of yet. You might not be ready for outer space yet, but just work hard and keep your eye on the prize and you'll get to where you want to be!"
I was not aware that Sesame Street had videos that looked at social-emotional learning until I stumbled on this one that looks at the power of the word yet. Although designed for younger children I suspect many middle and high school students would be engaged (since many watched Sesame Street as youngsters). This could be useful if you work with students on growth mindset and fixed mindset.