Clockwork openings
There are some systems where one side knows what he's going to play, more or less regardless of what's happening on the other side of the board. Usually it's White who has this luxury, and usually he's playing for some sort of automatic kingside attack. You know the sort of thing - a King's Indian Attack, or Grand Prix Attack, or one of the Colle / London / Stonewall type setups. It can be rather annoying to play against this stuff. Not that it's objectively so frightening; but practically speaking White is likely to get his attack, and probably also an advantage on the clock in a type of position that he plays every week - and that's not to be sniffed at. Nevertheless, my approach in defending against all this is generally to allow, or even encourage, White to do what he wants to do. I tell myself that so long as I haven't made any serious mistakes then there's no reason that his attack should deserve to succeed; and that if and when it fails ...