I definitely feel that way! When I hit 150 for the first time (on my way up, grr), I was devastated. I thought to myself "OMG, I am so fat, I can't believe I am so fat, I ought to die for being so fat." When I had been lighter, I told myself "if I ever get to 150 I will kill myself." Well, obviously I didn't kill myself at 150, or 160, or 170, or even 180.
On the way down, 150 is my milestone. I felt great at 150 this time around.
I still have a lot of days when I look in the mirror and all I see is fat though. I have this problem with clothing too -- my brain knows that I will fit into a size 8, but when I walk past stores I think to myself "I am too fat to fit in clothes from that store, I bet they don't even carry size 12." It doesn't occur to me until much later that I shouldn't care if they carry size 12 or not because size 12 is too big for me!
Of course I am wearing a pair of size 14 jeans from Lane Bryant right now.

They are big, but have enough elasticity that they still fit okay!