how DARE you not hold your chin up high!!!??? I can't say much, i'm pretty sure you saw my crybaby thread when my bulb blew on my first retro 
But seriously, man we all have setbacks. I've learned this the hard way plenty of times. Nothing hardly ever goes right when modding a car. That's why it's called "modding."
Now, I haven't touched my suspension, but i'm guessing the other side of the bolt is open like that too right? That should be simple to just drill out and put another bolt in.
If you can, maybe cut off the nut on the other side, so you can have part of the bolt left to take with you to buy another bolt, to get the right size.
Have you tried drilling it out yet?

But seriously, man we all have setbacks. I've learned this the hard way plenty of times. Nothing hardly ever goes right when modding a car. That's why it's called "modding."
Now, I haven't touched my suspension, but i'm guessing the other side of the bolt is open like that too right? That should be simple to just drill out and put another bolt in.
If you can, maybe cut off the nut on the other side, so you can have part of the bolt left to take with you to buy another bolt, to get the right size.
Have you tried drilling it out yet?