I posted some while back that if you look at Chelsea's games last season, and compare them to ours, it is STAGGERING how much space Chelsea were allowed to play in.
Over 4 or 5 seasons, we have shown pretty much every opposing manager that if they want to go toe to tow with us, they'll get reamed. The only exception I can think of pretty much is Spurs last season, who had a good go at us. Other than that, everyone else sits back and soaks it up, waiting for their chance, which invariably comes.
Realising this however, is not the answer, since we've been doing the same now for years. The question is, what changes do we need to fix it? One thing that strikes me is that on the break, we are usually lethal. So we absolutely must make sure than when such chances arise, we maximise them. If our opponents lose possession in their own half, we have a quick opportunity to pounce before they get organised again.
We absolutely must flood forward at speed - none of this stopping just outside their area and waiting bollocks. In on goal, as fast as we possibly can.