Oh yada, yada, yada.
Get OVER it, Sara.
You have had (loadsa) wine and 2 slices of pizza tonight and it is not going to kill you. Just get back on track tomorrow as far as you can. Living healthily is for living life. No more than that. It's not a longevity competition. We are all dragging our heels towards the inevitable. Just drag them as slowly as you can while moving through life as lightly and joyfully as you can.
Pessimism is more of a killer than poor nutrition, so research would have it.
So GET a grip.
Jeez. I want to slap myself most of the time. :-)