After tragedy strikes, we can survive by becoming a robot, going through automatic actions that fill the days. This is good because we still get things done and we continue to put energy into our lives through action.
In the face of loss, it is important to stay busy. Do not take time off work. If you have free time outside of work, volunteer or get another job. This is a method of distraction, but it is very helpful to get past the initial stage of loss.
You must distract your mind. Force yourself to focus on any task at hand.