Lao Tzu said-
“Do you have the patience to wait till your mud settles and the water is clear? Can you remain unmoving till the right action arises by itself?”
This is pancha karma (Ayurvedic cleansing process_. The process cannot be completed whilst going to work. It requires you being separate from life and sitting still, whilst eating copious amounts of ghee, to bring the mud to the surface. It can be a painful event if you're not used to sitting still.
We think about the purging aspect of a cleanse or the smoothie aspect of a cleanse but we rarely hear ideas on the sitting still aspect of a cleanse.
If you really want to let go, then it's a good idea to let the thing you're letting go to rise to the surface.