Dr. Dweck coined the terms fixed mindset and growth mindset to explain out belief in our ability to learn. Recent studies have shown that our brains are capable of growing new neural connections and strengthening existing ones. Developing a growth mindset increases a person's grit and resilience. What we say to ourselves about our learning determines whether we have a fixed or growth mindset.
Big Life Journal has journals for kids and teens to help them develop a growth mindset. There is also a podcast available.
Understood.org also has worksheets that teens and children can work through to develop these skills.
A Mindset Kit is available at the following link for both parents and educators.