system
Given the following post, respond as if you're commenting on Reddit:
human
How do we all recover from paper rejection?

A paper I worked on for several years was rejected after multiple rounds of review over almost a year. I went for a hike and am now on Reddit, drinking beer and eating crisps in bed (feeling quite disillusioned).

(Postdoc in materials science in a European university)
gpt
> drinking beer and eating crisps in bed

This sounds completely appropriate. 

Allow yourself a day or two to sulk and wallow, that's fair. But then get back on the horse and start working through the comments, talk with colleagues for their input/advice in addressing them, polish up your story, try presenting posters/orally at conferences for more feedback, polish it some more, and resubmit.