I think it depends how long the vacation? A month long vacation for me always helps when I find myself becoming overly negative. Edit* Should add, a lot has to

I think it depends how long the vacation? A month long vacation for me always helps when I find myself becoming overly negative. Edit* Should add, a lot has to do with your attitude. Some things won’t change and fighting then just makes you look like a jerk in the office. Either come to peace with it or find another job. Of course after you have reasonably done what you think you can to make a difference. Many jobs are brainless 9to5 collect a paycheck do bare minimum and this is ok for a lot of people, they find creativity and joy elsewhere.