Losses are those who made us better players or people.
If you don't lose you don't win so it is good to have experienced them in order to take your lessons and do not repeat your past activities.
But there are a lot of people that would take that losses so differently. Just think of those people that are addicted to gambling, I know that most of them are not addicted because they are losing but still, they view their losses so differently. Some actually think that they can get those losses back not knowing they will lose more.
Looking at this thread, we could say that not all of us will be able to look at losses like that.