"Wallowing" is being stuck in prolonged episodes of hopeless doom and despair, circular thinking, spiraling downwards. This appears as a formidable barrier. There's a sickening familiarity to wallowing - the very thought of it is depressing. Yet at the same time, familiarity is comforting, even magnetically attractive. There's a huge tendency to set up camp on the familiar side of this "impenetrable barrier".
Letting the familiar go, even when the familiar is miserable. Going towards the unknown, is daunting - we reflexively resist it. The momentum of our lives tends to be on the side of inertia - to remain in the camp, or try to go back. Going forward, through, beyond a barrier may not even be considered.
Intentionally opening ourselves fully to the physical feel of the barrier, with an open, "don't know mind" - no preconceptions, hopes, nor expectations - requires some bravery, and being fed-up with the old circular thought patterns. When an honest fearless open heart embraces a barrier, only the open heart remains.
Blackie and the Rodeo Kings with Serena Ryder perform "Black Sheep"