Overlapping light on objects

I am having trouble with a scene where there is a point light following the player as they move around. In the picture below, the ball is the player, and the circular shape in the top left is a bunch of cuboids I have put together to create a flat cylinder. The light from the point light is overlapping in the places where th objects intersect.

Does anyone know how to fix this?

Thank you in advance.63237-screen-shot-2016-02-04-at-24727-pm.png

Creating a circular shape with cubes will give you this effect. Overlapping faces creates the effect you see, that is called z-fighting. You should never place two faces in the same place and orientation. You should model your objects outside Unity with a modeling tool, using triangles that do not overlap.