If my game starts going sour, the last thing I want is advice or help from someone in my group, be it a friend, colleague or stranger. I HATE it when someone gives me advice on the course during a round - most of the time they are not pros and have no idea what they're talking about, and if I use that advice chances are I will be heading up another dead end street. When my game is not up to snuff, I know my swing and my game well enough to turn things around (most of the time) and scramble for a decent score (for me, which means mid 80s).
So my advice would be, just play your game, you are not kicking their butts, you are kicking the golf course's butt. And they might not want your help to begin with.
Go to your ball, prepare for your shot, wait for your turn, hit the ball, repeat.