To jump back, recoil, leap... in other words...
The 1674 definition of the Latin word resilire.
My definition of resilience is the ability to adjust to change. Change is the only thing that is constant.
You are not the same person you were a few days ago. You easily notice your hair and your nails growing but unbeknownst to you, the cells in your organs and in your blood constantly regenerate. Your bones get replaced every 10 years, liver cells every 300-500 days, red blood cells every 120 days, skin cells every 39 days (All of these are average numbers) and when you bruise or cut yourself, you heal in a few days. Your body is resilient, no doubt.
But your mindset? What does it take to maintain a positive outlook so you can deal with stress more effectively?
Using unhealthy coping strategies like drugs or alcohol, or falling into the pit of despair, feeling like a victim or throwing a tantrum isn't going to help. Being resilient means being flexible, open to, and willing to change.
One of the strengths of resilient people is their ability to regulate their emotions, acknowledging them rather than stuffing them. Observing the emotion and discovering what triggered it, resilient people get in touch with their values and consciousness, and then move on.
One of the tools that helps move out of negative bias is reframing (cognitive reappraisal). For example somebody did not return your call, and you think that they don't like you, or may be it was something you said, etc... instead, re-interpret the situation in order to change your emotional response: perhaps he/she has been super busy all day, and then just forgot to call you back; it has nothing to do with you.
Fearful, negative thinking is toxic to your self and to your team, as it is contagious, and can get in the way of the company moving through change fast and without friction.