Set small goals, do not look at the enire weight loss but small sections. I am 5'8". I was banded July 2007 and weighed 282 pounds, i was a size 24. On my one year anniversary I had lsot 100 pounds, and by New Years (18 months later) I reached my goal weight. I current weight 145 and am in an 8 or 10.
My first goals was to get to 250...that was all I focused on. Then i could hardly wait to get out of the 240's, then 230's, 220's... When I got to 210 i was excited by each pound knowing I was on my way to "onerderland". Once I brok the 200's I just looked forward to getting further and further away from that point. The last 10 - 15 pounds were the slowest but to be honest I felt so good even at 160 it wasn't a big deal.
You can do it!