to be so surprised that you doubt what you see
estar tan sorprendido que dudas de lo que ves (estar tan sorprendido que dudas de lo que ves)
"I couldn’t believe my eyes when I saw the results."
"No podía creer lo que veía cuando vi los resultados." (no podia creer lo que veia cuando vi los resultados)
something that seems bad but results in something good
someone or something that brings great happiness
patience brings positive results
to begin performing or speaking publicly
to work through the details of something by discussion
a risky or uncertain situation where the outcome is doubtful