I gained my confidence back
我找回了我的自信
选我吧 我的 完整些
例句：
1.我失败后的第三天,又重新找回了自信.
Three days after my failure,I gained my confidence back again.
2.戴在手上,我又重新找回了属于我的那份自信.
Wearing the watch,I gained my confidence again.