That's fair, but easier said than done. Reducing the stress/risk of deploys is a long, hard process at the best of times, and also is something that you have to

That's fair, but easier said than done. Reducing the stress/risk of deploys is a long, hard process at the best of times, and also is something that you have to continue doing in perpetuity as the complexity/failure impact of the systems being deployed grows. It's also an area where many organizations struggle to (re)commit resources appropriately. If you ever find yourself behind the curve in that area (as in: deploys are risky and stressful events), then a good short-term mitigation for the symptoms might be to avoid deploys on Fridays or similar, while also committing resources towards improving the root cause (deploys suck).