What is "Selfless"?

One of the questions that this reading sparked in my head was is there such a thing as being completely “Selfless”? and if there is how can I get there? Well, first being selfless is doing everything for everyone and not gaining or losing anything by it. So I would have to stay completely neutral. In that I would have to help only the  person involved. Therefore, I couldn't get anything out of the situation like advice to put in my own life. In every situation that a person encounters I think that they always gain something, even if it is just as minuscule as advice. 
 Now how to get to selflessness, I think after reading all of this over a few times that no one can ever get there. This is because talking to a selfless person would be kind of dull because they would be afraid to actually get something out of the situation so they may not offer advice to listen to their fullest. I think that being self-interested would be a good goal for anyone to try to achieve. This is because you can still gain from any giving situation and be a good friend.