I applied for a job today. I proofread my cover letter several times and then I had to copy and paste it from Word onto the company's online vacancies portal. I was an idiot and didn't check the newly pasted version, and a word at the beginning of a sentence somehow ended up getting deleted. I didn't realise it until it was too late and I'd submitted the application. 

I've been feeling anxious about it for hours. I emailed the company to apologise for the error because there was no way to edit the application. I figured it was best to own it and acknowledge it. I also know that logically I'm a degree educated professional, my application showed a secure grasp of grammar, and everyone makes mistakes - but I'm mortified because I'm usually so careful. I'm now having nightmare visions of my whole application being thrown out because of this one typo. 

I know this is just an anxiety flare up but I would really appreciate any practical tips or reassurance so I don't spend the next few days obsessing over it! Thank you!