Try to eat balanced meals because good nutrition is important to the healing process. Exercise is important. It provides a physical outlet for emotions. There are many helpful books available on the grieving process. Understanding grief makes it a little easier to handle.
Holidays can be especially difficult.
Schedule activities that you find particularly comforting during these time, and be careful not to overdo. Knowing that you will never be the same again, but you can survive and even go beyond just surviving. Some days you just hang on, but the better days will be back. You will gradually develop a renewed sense of purpose. It's okay to feel afraid Emotions, especially when not expected, can be frightening.