I do entirely mental work all day and it leaves me feeling like I’ve been digging trenches. I can’t really impart this to people who don’t have similar jobs, I get told I should be energetic and grateful I have a job I can do from my home office.
And I am grateful, that doesn’t make it easier when you actually care about your work and try to do it effectively. I’m just as tired doing a week-long analysis project for a big-ticket corporation doing it from my office as if I went into corporate and made use of their “first come, first serve” workspaces.