Sliding a door into the closet is going to lose closet space. I think that rearranging what you use daily would be better than installing a barn door.

Skip the barn door idea. Close the door to get what you need, or simply remove the doors to the closet. Or install bypass ClOSET doors.

It is in fact a closet:)

If you install a barn door inside your office, you eliminate wall space in the office. Outside your office might work but will look weird. Have you considered a pocket door?

Find a good carpenter to reverse the swing on your door.

Grover is right...reverse the door.

Consider whether or not you need a door at all for the office. You may be able to just remove it completely. If you must keep it, have the door reversed. It's not ideal because you're walking right in the the closet, but it's probably your best option.

The closet used to have bypass doors. I removed them because they were driving me crazy as I use that closet frequently. I do need a door on my office because I sometimes work at home and need to close the door if I'm on a meeting. I don't think reversing the door is an option because the light switch is on that other side. I have considered a pocket door, but a barn door seemed more simple. I just think it's awkward to have the closet behind the door. If I don't put up a barn door then maybe I should put the bypass doors back on the closet and just deal with it. (Now I wish I wouldn't have gotten rid of them.)

Pocket dooe. A contractor can move the electrical outlet and switch. We had this done during our recent remodel to solve a bathroom door and closet situation.
A pocket door creates a quieter environment than a barn door.

Doors on office or media rooms are important for many reasons. How about a barn door for the entry, on the hallway side. It could be a great feature that distinguishes the special nature of the room

A barn door on the hallway side was my original idea, but then I worried about the door looking awkward in the hallway. This room is right at the top of the stairs and across from a 4-foot long hallway that leads to the master bedroom. Maybe I should just put the door up and see. I can always take it down. I'll try to be brave. :)

My speed reading isn’t what it once was:-/
Since you already have purchased the new door- I’d like to see it contrasted by matching or complimenting the barn hardware / perhaps insert glass in the top panel; in this way the visual weight of the hardware will be balanced - Good Luck