Yeah, Mark's hit the nail on the head there, get out of bed, eat breakfast, have a cup of coffee, hit play on your track for a short bit, hit stop, make all the decisions, don't listen endlessly.

Dig up whatever your best EQ is and the tastiest compressor, set 'em up, hit play, make some decisions. If it ain't immediately obvious stuck on three other records (at the same volume you've been listening to your track - very important) and have another shot.

If you have to faff around with the track editing or something do it with the volume turned down a lot so you don't blast yourself to death while you perfect that last minute arrangement tweak you've just thought of.

But if you've got the mix right really there shouldnt' be much to do at this stage ... there's an awful lot of fuss made about the best way to master a track whereas, and I'm sure it's been said a million times before here, but the mix is the thing where most of the problems should be fixed.

By the time you come to master something it should be honing perfection rather than fixing flaws.

Mixing properly and reatively quickly is also a shit load easier when you've just got up and you've not been in the studio for hours.