It really depends on how the negativity is expressed, and about what. Being negative about something that you can change is defeatism. being negative about some

It really depends on how the negativity is expressed, and about what. Being negative about something that you can change is defeatism. being negative about something that will happen and can do nothing about is at best unhelpful for anyone. Being negative about how you reacted to something, how you did something, or how something was done (without pointing fingers) is extremely helpful for me, it push me to improve or change where needed.