You know, I wanted to have a little succulent garden on my window. So I bought one in the supermarket. I think that this is my first mistake. My second was that dear old succulent was on the window even during the winter so he got cold and unfortunately he died.
But hey, I learned that nothing - apsolutely nothing green should be put on my watch. :D
However, your succulent is stunning! :)
Try again, get a succulent that is hardy like this one. I'm just like you, plants are dying but not this one :)