Hello,
I got this succulent from an estate sale yesterday. It was likely going to end up in the garbage if I didn't take it. It seems to be unhealthy in certain areas where the stem is brown, but other areas seem better. How do I revive it? Several areas have gotten very long, should it be cut back?

I don't know anything about succulents but your plant appears to be Burro's Tail (Sedum morganianum) I wonder if perhaps the areas of the stems that have lost leaves, is due to inadequate light?

Hopefully others who grow that pretty plant will be along soon with advice.

I used to grow this one in my home. The color got lighter and lighter and the little leaves were more widely spaced. Then I put it in my new greenhouse and the leaves immediately grew closer together, larger, and a darker green. These root easily from stems or leaves. If you see anything you don't like, trim it off. I'm getting ready to start a whole new pot using only the greenhouse grown pieces.

These leaves come off easily, so make sure you place your plant where nothing will brush it, and animals can't get to it. If it's outdoors, make sure it's got some wind protection.

Once you have your plant like you want it, leave it in the same pot for years. They do fine like that. If any leaves fall off, just toss them back in the pot and they'll root and make your plant more full. Good luck!

Looks fine to me. Maybe, just a LITTLE water or lite stressed. But ! Don't get carried away with water. Under-watering, is best. Water as you normally would, by letting soil dry some between watering's.
Hang it up.
Trim long tips off a bit, and plant them with mother plant for a fuller pot.
😎😎😎

Morgan ! Nice find !
Years ago I kept mine on a sunny windowsill and it grew horizontal. It was protected from everything in that spot. Love the plant and its potential.

It's a beautiful plant, definitely worth saving!

The brown stems are just old stems that the 'leaves' have been knocked off of. I have had one for years and, when it has an 'accident', I cut the long bare stems off and let new ones grow. Leaves that fall off root in whatever plant is below it. Makes for an interesting GH weed.

If the soil is fast draining, and it has lots of sun, I don't think you can overwater. Mine hangs with my orchids facing south and gets watered every day in the summer. The red flowers form on the ends of the branches.