The only thing you should care about is whether your boss's criticism is well founded. If your boss's criticism makes sense, then go with the flow and learn from the boss's criticism. I have received on occasion tough minded, ego busting, blistering criticism that was well founded and after taking the corrective action needed, I was none the worse for the experience.

Whether you lost your mojo depends on your determination that whether given what you knew, you could have predicted and pre-emptively avoided the criticism you received. From my outsider's vantage and from what you disclosed in your post, it doesn't look that you could have known from your own experience, so your health was not a factor in this case.

Grin it and bear it, fix it, learn from it and especially, don't pass judgment on yourself over it. Not knowing everything is something that happens to the best of us :)

Note: if you believe that your boss's expectations are unfair, push back at once. I worked once with a colleague who actually expected me to read his mind. I told him point-blank that I am no mind reader and I had him lay out his expectations. If you have a systemic communication problem with your boss, then before you do anything important, you need to pre-emptively review with our boss what you intend to do. You don't need to go into excruciating detail, you want to make sure that you are not missing a big piece. At any rate, criticism is good and life would be boring without it - nothing like getting pushed to do better :)

The only thing you should care about is whether your boss's criticism is well founded. If your boss's criticism makes sense, then go with the flow and learn from the boss's criticism. I have received on occasion tough minded, ego busting, blistering criticism that was well founded and after taking the corrective action needed, I was none the worse for the wear and tear :)

Whether you lost your mojo depends on your determination that whether given what you knew, you could have predicted and pre-emptively avoided the criticism you received. From my outsider's vantage and from what you disclosed in your post, it doesn't look that you could have known from your own experience, so your health was not a factor in this case.

Grin it and bear it, fix it, learn from it and especially, don't pass judgment on yourself over it. Not knowing everything is something that happens to the best of us :)

Note: if you believe that your boss's expectations are unfair, push back at once. I worked once with a colleague who actually expected me to read his mind. I told him point-blank that I am no mind reader and I had him lay out his expectations. If you have a systemic communication problem with your boss, then before you do anything important, you need to pre-emptively review with our boss what you intend to do. You don't need to go into excruciating detail, you want to make sure that you are not missing a big piece. At any rate, criticism is good and life would be boring without it - nothing like getting pushed to do better :)