How did the challenges nick vujicic faced affect his self concept negativelynas well as positively?

The challenges Nick Vujicic faced negatively affected his self-concept by initially leading to feelings of self-doubt and low self-esteem due to being born without limbs. However, overcoming these challenges positively impacted his self-concept by building resilience, self-acceptance, and a strong sense of purpose, ultimately empowering him to inspire others with his story of perseverance.