Yoga on ice (by Sami Taipale)
yourbeautifulmind:

happy without guilt
The belief that unhappiness is selfless and happiness is selfish is  misguided.  It is more selfless to act happy.  It takes energy,  generosity, and discipline to be unfailingly lighthearted, and yet, everyone  takes the happy person for granted.  No one is careful of his feelings  or tries to keep his spirits high. He seems self-sufficient; he becomes a  cushion for others.  And because happiness seems unforced, that person  usually gets no credit. - Gretchen Rubin in The Happiness Project 
image source unknown but greatly appreciated
雪の金閣寺 Kinkakuji in snow (by kubotake)
Shimmer (by Mizzzzzz S)
Treeclipse (by cwwphotos)
Liatoppen by night December 09 (by Odd :-))
In the early light of the morning, just sit down and admire (by Vincent Brassinne)
winter growth in the apple orchard (by joiseyshowaa)