You will find that it's best to not sweat the small stuff today -- which is what most of it is! Details matter far less than you fear, so take it easy. Focus instead on your larger goals, or simply on doing as little as possible.
You can't get rid of that nagging voice in your head -- it may be telling you to speed up, slow down or do something totally crazy, but you've got to at least partly do what it says to shut it up!
Are you going mad searching for your ramekins? Never fear -- every canny cook knows there's always a substitute. If you're cooking custard, use some ovenproof mugs of any size. If you're cooking souffles, try tall ovenproof mugs so the souffles can rise.
Don't hesitate to use your solid network of friends and acquaintances in the quest for style greatness. Got a pal who has an in with that hot stylist? Call her. Curious where your fashion-savvy neighbor shops? Ask!