changed my goal weight.. am i crazy?

Seems rather low. You should make your goals based on your lean body mass and body fat percentage you wish to achieve.

I'm 5-4 and set my goal weight to the top end of the "normal range" for my height. I don't think you're crazy for wanting to the see the lower end of the range, your profile pic looks young so it maybe very realistic (I'm 41 so I don't see it in my cards) but I would say if you're worried about it, maybe you should reach for a goal right in the middle and once you reach that then consider making it lower.

I'm sure it's possible, but I'm wondering why you've picked that weight as your goal. Aiming for a certain number just because it's the lowest weight you could choose in the healthy range, or the lowest you think you could achieve might not be a good idea. You could work really hard to achieve that target, and then look too thin for your liking. I'm 5'3", and at the moment I'm aiming for about 130 lbs - I've worked that out using my estimated body fat percentage now, and what I would like it to be, as well as what I estimate my measurements/clothes size will be at that weight. Why don't you try and estimate your body fat percentage now (using callipers, or the online calculators at fat2fitradio.com) and then work out what body fat percentage you'd like to be, then you can work out what weight to aim for using this tool: http://www.fat2fitradio.com/tools/ibw/

This website: http://www.leighpeele.com/body-fat-pictures-and-percentages gives a rough idea of what different body fat percentages look like. This one: http://www.mybodygallery.com/ gives an idea of what other people at a certain height and weight look like, although remember that people have different frames and amounts of muscle.

The lowest possible number is not necessarily the best one for you for health, attractiveness or sustainability. Why don't you set higher mini-goals and see what you think when you reach them?

I changed my goal weight to 115lbs... im 5'4". I am 166 lbs right now... is 115 a crazy dream or is it a realistic goal?????

Absolutely realistic and in a healthy BMI range...as long as you're exercising regularly so you can get a sensible amount of calories in and you're not having any unhealthy thoughts. I'm 5'7 and 120 and easily eat over 2000 calories a day (the rdi for women) with exercise. On that note, if you are doing it because you 'feel fat' you are likely to keep feeling fat. If you strength train you could look fantastic at 130.

I think you should set your starting goal to 130 and then reassess once you get there. 130 could look completely different on you now then it did when you were there before.

I'm 5 3 and my happy weight is 105-110. So I don't think you sound crazy, just a perfectionist like me.

Do u not want any muscle at all? 115 would make u skin and bones. My goal is 145 and i'm 5'1. That would put me at 21% body fat. check your body fat and reevaluate.

I'm 5'6" and weigh 116. I've got 16% body fat and am in awesome shape--I do NOT think 115 is unrealistic for your height. Good luck!

115 is rather low.. but it's not so much about the number. you should be happy at whatever weight you end up. i've been up and down and all-around and i've finally come to realize that happiness, self-respect, and confidence are what matter most!