work with anger?

When I was in MRT yesterday,I saw someone reading a book with a title,"work with anger".I don't know what is the content of the book,I can only guess it.

When we work with anger,sometimes,we won't get the result that we wanted to.It can not work,because when we work with anger,everythoing seems so difficult for us.Normally,it comes when we wanted to do someting we can't,it will make us angry and force us to do it.Some people can do it,but some couldn't.

Why some people can do it?Because they lack of confidence,they think that they can't do it,but when they work with anger,they show that they can do it.Some people couldn't do it even though they work with anger.It is because they really can't do it,thats not their talent,not their ability.

I just wanna say,if you said that you can't do it,at least you try first.If you really can't do it,don't force yourself to do it with anger,because when you do it with anger,although you may do it but the result won't be the same as youe expectation and it may affect your health.It will make you stress and may cause hipertension,so what's the point of doing work with anger?Think about it!