Grieve for the lost dreams, hopes, and expectations. They are just as real for you as the physical person you lost. Take time off from grieving, when you're ready, to do something enjoyable or celebrate someone else's happiness. Continue doing things you enjoy. Take care of yourself physically, mentally, and emotionally.
Exercise can help release tension, vent anger and allow feelings to emerge in a constructive way.
Trust that the pain will decrease and life will be better. Explore and participate in religion, faith, and spirituality as a resource for hope and support.