I came across these two expressions(Pull yourself together & Get it together). And I think they have the similar meaning. But I'd like to know if there's any difference in meaning or nuance between them. Could anyone help me?

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@boulder2004 I would say that in general they are pretty much the same. however if you tell someone to pull yourself together it might refer more to something personal. something about their feelings or their behavior. for example if a friend of mine recently got divorced and was having a difficult time dealing with it and it was affecting her work and her personal life I might say to her that she needs to pull herself together. sometimes you could also say you need to get your act together. as far as saying get it together it could mean something more like a person who tends to be late all the time or a person who forgets to do things they're supposed to do. you could tell them they need to get it together. in other words change their way of doing things so that they are more effective or productive in a sense. but as I said in general terms they could mean the same thing in most contexts