The challenge of see is about the way that you see your own work. 

How you think you're doing is challenged by someone else when they give you feedback. You can find it difficult to accept what they have to say, if you disagree with how they seem to see your work.

Sometimes, we are challenged to see how our work really is, we may not realise that our work is not as good as we think it is.

Sometimes, we are offended that others don't see our work as being as good as we think it is. Sometimes their perception is wrong. 

The challenge is to understand that it is our perspectives that change the way we see things.

The challenge of we relates to our relationships.

If you have a great relationship with someone, what they have to say about your work is more likely to be respected and listened to.

If you don't like, don't trust or even just don't know the person giving you feedback, you are more likely to ignore or disregard what they have to say about your work.