It's a pretty room.

I would suggest painting the walls a lighter color and adding some color with accessories, towels, etc.

There is too much of that brownish color on the trim, cabinets and the doors. At least lighten the trim color around the doors.

Change the wall color and the art.

I like earth tones so maybe I'm the wrong person to comment. But you could lighten the walls, paint the door and molding white, use more colorful art, and bring in color in towels and rugs. Depending on budget, could add more interesting countertop (try searching remnant at local granite yards).
Attaching pics of my new earth-toned bathrooms, FYI. First couple are new master, second are new hall bath. Both have similar toned wood to yours.

I think the more interesting granite in my bathroom adds interest, and I think your wall color is too similar to the tones in your bathroom, try lighter - or darker, as in my third pic.

Susan, you're going to put some artwork on your bathroom walls right?

If you change the paint, you'll immediately feel better about the space -- find a grayish (maybe taupe) tone that pulls from your tile but in a cooler direction. The wood should be a nice counterpoint to a cool setting.

I would paint the walls a watery blue/ green very pale

I can't see the blue. Anyway, here's a grayer tone and a pale blue, just to help you visualize...

Lighten the wall color, love the blue above, soften the window with a beautiful Roman shade, perhaps, natural Iinen, pretty towels and art. If budget allows I would look for a new light fixture above the vanity, something a little less builder grade.

How about a light but beautiful aqua for the walls and white matching the counter for the trim? That would take the eye off the dark but good-looking cabinets. Then add aqua towels and accessories and a framed piece of art with aqua in it.

Accessorize!

Go for paint that's more the color of your shower tiles. Don't paint the door or the trim. Here's Revere Pewter by BM

BM Edgecomb Gray. It isn't gray, check it out.