I was reading this morning some research on brain neuroplasticity related to confidence from Mount Sanai Hospital School of Medicine. They call confidence ‘life’s enabler’ or the quality that turns thoughts into action. Taking small steps in daily life adds up, they say in other words. Also, viewing failure as new information to be accepted as part of learning, versus sense of failing.
Good posture, too, plays a part in how confident we feel. This is innately known with practices like Tai Chi or yoga; feeling confident physically imports into feeling confident emotionally and mentally.