Having a difficult time - feeling really sad

My mom and I were best friends. We spent at least three to five days per week together. She was the one person who I felt totally and completely free around. She was the one person who I could tell absolutely anything to and she would never ever judge. She was the one person who would make everything better when times were tough. She was my shining light and now that shining light is gone. Poof, one day she was just gone. To say that there is a massive void in my life is the biggest understatement. I feel so empty and such sadness that I'm afraid I'll never be able to move past. Anytime I start to think about her and memories of her my anxiety gets pretty bad because the thought, the reality, that she is no longer here is devastating, to say the least. I'm at a loss in my life. I feel like my life has been flipped upside down. When my mom first passed away I was crying so hard every day that I didn't think I'd ever have any tears left to cry but low and behold my body was able to create more and more tears. Then I would cry every other day, then every few days. It got slightly easier as time went on. Now I see her in my dreams and when I wake up from those dreams I am so depressed because yet again the reality of her not being here sets in. I don't know how to move on with my life, I mean really move on with my life. She was my confidant, my guide, my best friend. Suddenly I am at a loss, feeling really lost and alone.