My Mom died a few days before Christmas.

I lost my mom December 18, 2013.  I always thought I understood grief but to lose a parent is impossible to understand until it happens.  In life I am a very positive person but it now feels like a veil surrounds me that I cannot lift.   To be so close to tears and at a loss for energy is a battle that is hard to win.   I know time will help and life will go on but it's just tough.  My dad seems to be lost and I carry the weight of his grief which is hard.  I am the oldest of four children.   Advice from others who have struggled with this loss would be helpful.