Imbolc is a time of new beginnings, the start of spring. The Snowdrops, crocuses and other early flowering plants are already pushing through the cold hard ground, the birds are singing again, and the days are getting noticeably longer.
Although I don't do New Year resolutions, I try and set myself a challenge for Imbolc, either to achieve something in particular, or to change something about myself.
This year's is to be more positive. I'm not entirely sure that it's working, but it's early days yet :)