Try to learn to think that there's no void to fill, because if it's the kind of existential void I suppose it is, and not just cravings, nothing's ever going to fill it.
The good thing is that actually there is no void. It only exists as long as you stay attached to it. When you let go of it, it disappears.
Sorry for sounding like a cheap guru, but don't stay with your void. Keep moving. Let it go.