It's very important to be able to go. It will definitely be good psychologically and mentally. My personal holiday preference is a place far away from people, where I can spend quiet days.
And it doesn't need to be expensive if you can't afford to. There are so many cheap rental houses now or maybe even camping would do the much needed get-away. There will always be a lot of options even near your place. You just need to look for them. And also, I like places that are not crowded also. It is better to contemplate on your life if the place is at least quiet.