From the book ‘The Resilience Factor’ by Karen Reivich & Andrew Shatte (p.45):
“Self-efficacy is our sense that we are effective in the world. It represents our beliefs that we can solve the problems we are likely to experience and our faith in our in our ability to succeed.” “At work, people who have faith in their ability to solve problems emerge as leaders, while those who aren’t confident about their efficacy find themselves lost in the crowd.”
It usually means the person has a strong sense of independence and self-confidence. He/She tends to build on their successes and learn from his/her mistakes to improve his/her efficacy.