Definition: a feeling of sudden emotional excitement or an unexpected wave of emotion

•The thrill isn’t in the winning, it’s in the doing. — Charles Henry Noll (1932–2014) American professional football player & head coach
• Exploring is an innate part of being human. We’re all explorers when we’re born. It’s there, I think, in all of us. And for me that moment of discovery is just so thrilling, on any level, that I think anybody that’s experienced it is pretty quickly addicted to it. — Edith Anne “Edie” Widder Smith (1951-) American oceanographer

Comment: It may be interesting to look at what gives you a thrill. Is it fear in a small dose? Is it the exhilaration accompanying an important discovery or a personal accomplishment. Or maybe it is the beauty of nature or art?