What is it?
Resilience is your ability to bounce back from negative stimulus. As Nelson Mandela said "The greatest glory lies not in never falling but in rising every time we fall".
Why do we want it?
Resilient people worry less, rebound more quickly from setbacks and brace less when they see negatives approaching. This means less stress and those who cope well in stressful situations are healthier both physically and emotionally.
This does not mean sweeping negative feelings under the carpet, it means having the emotion or experience then rebounding quickly with a broader perspective that enables problem solving.
How do we foster resilience?
Resilience is a resource, not a character trait. Positive emotion enables resilience. Positive emotion also grows resilience. In children we can point out their good use of problem solving or planning as opposed to just calling them smart. Reminding them that they have skills to problem solve is much more helpful than just patting them on the back for having a high IQ that was entirely out of their control.
Showing grit by working through things that are difficult is another way to grow more resilient. When you do something that is hard your confidence and your competence increase.
Resilience is like a muscle, the more you use it the stronger it gets.