You aren't a failure, trust me. Relapse is actually normal in recovery so not to worry, do you know specifically why you might have injured again? How do you think you can avoid instances like this?

Always know that you have support here. After a period of time without doing so, I SI-ed and felt bad for a little while, but I let it go. And now I can say I haven't done that in a while, so stay calm. The more you dwell on it the more it'll stress you out.

Relax friend, you'll be alright, trust me. ;-) (hugs!)