It takes a year at least to grieve properly, sometimes three or more, don't please think there is something wrong with you if you are not "over it" by now. It affects the way you think and behave in many small ways that you hardly notice, but they are still there, so do not be too hasty. And beware of making big changes while you are still grieving, you can regret it later when you are more yourself. It is good that you have a friend, I hope plenty of friends; living for what you can do for others and working at projects, even if they don't seem important now, can help a lot, if only taking away the thinking time, and at least you have something to show for it when you emerge from the tunnel. Wish I could be more help but that is all I have got.