If you are in INSEAD, it would be a good idea to take the negotiations elective in P3. While parts of it might feel like "but this is common sense", it is surprising how many of us never really paid attention to negotiation. I'm hoping some aspects of what I learned in this elective will help me later on.
(as for DTLF's comments in the previous post - turned out I did not read her/his post correctly, after all. My bad!)