lost 48 lbs in 7 months, i know i can loose 19 in 4

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im irritated right now... I started my weight loss journey back In may and to this day have lost 48 lbs,, ive was loosing up to 2 usually 3 lbs a week and now that I have hit the 180s it seems like it is NEVER going to come off. I haven't changed my eating habits it just sucks that it isn't coming off faster. im loosing now like 0.5 lb a week.... I know that the skinnier I get the slower it will come off but I just feel as if I will never hit my goal... I have 19 more lbs to loose until my ultimate goal.. It just needs to come of faster.. if I have lost almost 50 lbs in 7 months I don't see why I cant loose 19 in less than 4...
sigh, feel free to add me and we can help eachother out on this journey,