Botanically speaking: Gala- means milk-white in Greek and –anthus means flower
(Swedish botanist Carl Linneaus named this milk-white flower in 1753)
Buy potting soil, open the bag and just smell it.
Search your computer for pictures you took last summer, when all was green and beautiful.
Sit in that rectangle of sunshine on your carpet, if you can steal it from the cat.
Buy cut flowers, take a picture of them (so you can still enjoy them) then give them away. You will feel warmer.