How do I respond to major revisions from my committee without panicking?

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I just got my dissertation chapter back with 30 pages of comments. I haven't opened the document since seeing it. A professor told me: “This is normal. The committee is trying to help you, not punish you” . But it doesn't feel normal. It feels like I failed.

A writing guide suggests:

1. Don't respond immediately. Let it sit for a day or two.
2. Sort comments by type. Easy fixes, clarifications, structural issues.
3. Start with the easy stuff. Build momentum.
4. Write a response letter. Explain each change (or why you didn't make it) respectfully.

How do you stop taking feedback personally? I know my committee wants me to succeed, but reading all that red ink is crushing. What's your process for working through major revisions without losing your mind?