We will always need doctors, nurses, cops, firefighters and whatsoever. Me, being a psychiatric nurse with the license to prescribe medication to patients, as well as take the decision for them to be institutionalised or not (often by 'force'), I sometimes as well make the wrong decisions (thankfully not a lot), no matter how much hours of thought I've put into it. The 'fragile' thing about our work is, that whenever you make a misstake, the consequences are often way worse and more visible than in other jobs. It reamains 'people work' (sounds better in Dutch) and where there are people working, misstakes will be made. Being a professional, you should always strive to make no errors at all, improve your knowledge whenever you can and keep evaluating actions that you took.
Glad you're doing better!