Three months and I still want it quite bad

I don't mean this to sound like I NEED cigarettes, because I don't.

But I have been more or less depressed since quitting, I do get flashbacks atleast once a day of smoking which puts me in a sad mood, and I do occasionally dream about smoking (and always feeling guilty). It still feels like a vital limb got cut off, and I wish it wasn't so. Not smoking is fantastic, I love saving money and time and stress. I guess what I'd like to know is: does the need ever end? If so, what do I am for? 1 year, 3, 10?