There's no better way of dealing with stressing about things that can go wrong than being prepared. You never know what might happen on the wedding day, and no doubt you'll fret about a million possible things, but there are some that can be predicted and dealt with in advance by putting togather a wedding day repair kit before the day. Then you know that whatever happens, you'll probably be able to deal with it!
Here's what to put in (delete as appropriate of course!):
Spare tights
Face powder
Hair grips
Tissues
Tampax
Headache tablets
Clear nail varnish (in case the spare tights ladder too!)
Plasters
Nail file
Inhaler if you're asthmatic
Mini needle and thread kit
Safety pins
Hairbrush / comb
You might end up needing a small bag, ask a trustworthy attendant to make sure it is at hand for when you might need it. Hopefully if it's anything like umbrellas and rain, if you have it, you won't need it!
