I recycle paintings that I don't like anymore. I use rubbing alcohol to remove most of the acrylic paint, then begin again.
A big brush and lots of black, then a warm yellow in the spaces left.
An enso in pale pink, reinforced with black.
Orbit, acrylic on canvas, 12x12 in. // 30x30 cm.
Simplicity is the removal of the useless and the unnecessary--source unknown