A stabilizing device for stabilizing a payload includes a handle assembly, a payload stabilization assembly, and a constant force assembly. The handle assembly includes one or more grips configured to permit a user to support the entirety of the stabilizing device using the one or more grips. The payload stabilization assembly is configured to support the payload and permit the payload to rotate about at least one axis of rotation. The constant force assembly is operably connected to the handle assembly and supports the payload stabilization assembly. The constant force assembly is configured to provide a force that equipoises a gravity force of the payload stabilization assembly with the payload in a vertical direction such that a net force of the payload stabilization assembly with the payload in the vertical direction is substantially zero.