Simply a case of etiolated plant. It just needed more sun to maintain its compact growth, when there's not enough light they stretch or "reach" for more and look like that. Often after winter some plants will become stretched, a nice way to prevent this is place them under fluorescent lighting or grow lights, or if you have a bright south facing window that doesn't get too too cold it would work too.

The picture is not very clear, but it seems like your plant could also use a new, more porous soil mix.

When spring comes, you can simply behead this plant and start over.

Thank you for the help I was hoping it would be something easy like that but I've never had succulents before it makes sense though because it looked good outside and didn't start this until I had to bring it in for the winter. It is in a cactus mix.