Ask HN: How do you stay motivated when working remotely?

I have a lot of trouble finding motivation when working remotely. Some days require a lot of activation energy to get started.

Note: I like my job. Really, I do. I just find that I'm much less motivated to do as I much as I used to.

Has anyone felt a lack of motivation and/or job fulfillment when working remotely? What strategies have you used to combat these feelings?