Commit to learning from it and not making that error again. That requires some serious unpacking of the situation - not just the specifics "I gave this antibiotic instead of that antibiotic" but understanding how the error came to pass - did you make assumptions, not use "external brain" resources, not review the EMR or vital signs, blow off a subtle cue that you could have paid more attention to, etc.
The ideal scenario:
https://rebelem.com/the-squid-protocol-sq-insulin-in-dka/
https://emcrit.org/ibcc/necfas/#basics