她对自己的能力很自信。
tā duì zìjǐ de nénglì hěn zìxìn 。
She is very confident in her abilities.
自信是成功的重要因素。
zìxìn shì chénggōng de zhòngyào yīnsù 。
Confidence is an important factor for success.
你要自信,这样才能更好地表现自己。
nǐyào zìxìn , zhèyàng cáinéng gēnghǎo dì biǎoxiàn zìjǐ 。
You need to be confident in order to perform better.