I'm half and half between "I'm currently working fulltime on my own startup" and "I'm working on a project on the side" depending which way you look at it.
I'm doing 2 or 3 days a week freelance/contract work to support working on the startup the rest of the time.
The aim being that when we turn on payment in the next few weeks I'll be able to scale back the freelance work to spend 100% of time on the startup.