Hi:
I can certainly relate - I've just broken my leg and face a similar problem. Numer one is protect the injury - don't do anything that imperils the achilles. In the bigger scheme of things the few weeks you'll miss now is irrelevant.
In the meantime you can work on strengthening your upper body with weights, and of course do a crash course for your core. it's always good if you can work to improve something at such times.
Good luck!
i think it would help you not go crazy!