The first stage is acknowledgement. In this stage, all that you can really do is acknowledge that the divorce is real, without really wrapping your head around what is happening. You may feel all over the place, and the divorce may be taking over every aspect of your life by making you feel completely helpless, vulnerable and overwhelmed.
It is important when you are in this stage, that you think things through, as thoroughly as you can. You should try to stay aware of your feelings, even when you are not able to address them right away. Work through your pain, by focusing on positive things, like writing, competitive sports, drawing, making music, healthy exercise, doing crafts or spending time with people you care about.