doing our best

Jesus said, and when we have done all that we can do, just stand and remember we are nothing but servants... what I am trying to say is, when we want to do something or if something is given to us to do, we should give it all our best. Jesus said, when we have done all that we can do, so if we start to do something then we say, ok, that's enough, let somebody else finish it or that's all I'm gonna do, then actually we have not done all that we can do. To me, it seems like the Lord is talking about completing tasks that are given to us. Do not do incomplete work, we are to do our best at what was given for us to do and do it completely.