自信是具有感染力的，不自信也是一样。

81:Confidence is contagious . So is lack of confidence.

youdao

多与自信的人交往；态度是具有感染力的。另一方面，也要尽量避开不自信的消极人士，两种方式都会起作用。

Cultivate relationships with "can-do" people; attitude is contagious. On the other hand, avoid "can't do" people. It works both ways.

youdao