How does one concentrate on work when you've been told that your workplace will shut down in 60 days?

We were given a 28 day notice at my last job. Thankfully I was already hired at another job and was planning to give my two week notice. I honestly didn't care about work by that point. I was totally burnt out and was tired of dealing with co-workers who were older than me and didn't like that I was one of their managers. 🤷‍♀️