I'm sure everyone has been in this situation. I found the best for me was to go all out the whole game - at least I knew I was doing everything to make my team win. If that meant making the right pass on one of the few possessions I touched than ball rather than thinking 'I might not get another chance to get a shot in this game', than I'd rather make the right play. I ran hard on the break, got back on D, went after rebounds and made my mind up I wanted to be the best defender that I could be. People do notice that stuff, and teams that are dysfunctional never tend to last long anyway before they implode. And in the end, at least I had a good rep as a hard worker, and it is amazing how people would really rather playing with that type of player.