HELP! Not losing weight even I eat a lot or very little?

You don't need to lose weight. You're screwing up your metabolism with your VLCD and exercise trying hit a number on the scale.

It sounds to me like your goal is more about losing fat and increasing your muscle definition, in which case you want to do a body recomp, and not weight loss. I know this is going to sound odd, but you would probably be better off doing a bulk and cut cycle, or a slow recomp, which means lifting heavy (for you) weights and eating at a slight deficit. The idea is to increase your muscle (you won't get bulky) and burn off the fat. The number on the scale may not vary, but your overall measurements will be smaller.

Not saying you want to necessarily have this look, but here's a good example of body recomposition:

http://www.nerdfitness.com/blog/2011/07/21/meet-staci-your-new-powerlifting-super-hero/

Thanks for the link to the inspiring story! She looks really great!
Yeah, my goal is to lose fats and gain muscles. I don't really care about the numbers on the scale if I'm gaining muscles, but the thing is I don't see I gain muscles or lose any fats. Or is it just too slow to be noticable?
So, do you mean that I should do more strength training apart from doing Insanity? (I've stopped my strength training since I started Insanity as the program incorporates strength training).
Also, from the blog, it seems that she focused more on strength training, but it didnt mention much about her doing cardios.
So, should I focus more on cardios or strength training for now?
I've always think that no matter how much I lift, if I don't do enough cardios, my muscles will just be covered by my fats. Hence, I've decided to start Insanity as it's an intense workout to help me burn off more calories.
Thank u so much!

You want to gain some muscle? I'm going to be blunt.

Cut out this very low calorie diet nonsense. You CAN eat more if you want to by adding in some calorie dense foods. Nuts. legumes, avocado, etc. etc.

If you want to gain muscle, you MUST increase your calories to your TDEE or slightly above and weight lift. Get yourself to the gym three times a week and do some heavy weight lifting. Squats,lunges, rows, bench press. Find a program that fits you. After doing some routines from New Rules of Weigh Lifting for Women, along with high intensity interval training between sets I tried Strong lifts. HATED it. Went back to my old routine and I'm doing peachy creamy now. Google for a routine that works for you, or buy/borrow New Rules of Weight Lifting for Women.

You do not need to lose any weight at all.

Best of luck to you.

Thank you so much! I've been lifting a lot of weights in the gym for 5-6 times a week, for the past 3 months.
However, by focusing so much on strength training, my cardios were not as intense as doing Insanity.
For the past 3 months, my cardios are just 20-30 mins of HIIT training on the treadmill everyday before strength training, sometimes swimming on days that I don't feel like running.
Since I see that the fats hanging around my arms and thighs are still a lot and unbearable, hence I've decided to stop going to the gym during this month and start Insanity to burn off more fats.
The reason that I stop going to gym when i start Insanity is that I felt that there's already strength training incorporated in the programme and I see people have gained beautiful muscles which are more defined at the end of the program, even without liftimg weights.
So, do you recommend that I stop Insanity and instead go back to lifting weights in the gym and do HIIT on the treadmill?
Or should I go to the gym but at the same time continue Insanity?
I MIGHT not be able to do both together everyday, as u know, it's already feel like dying doing insanity everyday. But I can try to if it really does help!
Thanks in advance!

Just remember that you can't spot reduce. A calorie surplus and weight training (plus cardio) is what helps you tone and build muscle, but you can't really choose where you lose. It comes off when it comes off, so don't be discouraged if you follow the advice and don't see the results you want right away.

So sorry, but I'm a bit confused here. You've mentioned calorie surplus to gain muscles, but I thought that to burn fats, we are supposed to have a calorie deficit? So if I have a calorie surplus, how am I supposed to gain muscles while lose fats?
Thanks for the encouragement too, i will not give up and will continue to work harder.

I don't know anything about the Insanity workout program. Is that weight lifting or cardio? Weight lifting is how you build muscles, cardio builds endurance. You need to eat more, though, to support your workouts. You are already pretty small as it is.

Insanity workout is a 45 mins HIIT session, 6 days per week, it does a lot of cardios, with a lot of jumps, so it's really intense.
It also incorporates a lot of push ups, squats, abs exercises etc., so generally it helps to lose fats while building more defined and toned muscles.
You can check Insanity out in youtube and so far I feel that it's a really great workout.

You absolutely can't pick a part of your body and make it smaller. Burning fat means you are on a campaign to lose weight, which i not good due to your already low weight. You also don't gain muscles and lose fat at the same time. With a calorie deficit, you lose fat. With maintenance or slightly above, you generally grow some muscles. However, it takes a long time and dedication to achieve Measurements are essential when weight lifting to try and grow some muscles.

I am 52 and cannot tell you the amazing changes I've seen in my body from weight lifting, especially AFTER losing the weight and eating at maintenance, and sometimes slightly above, and heavy lifting three times a week.

Wow, glad to hear that and it's really inspiring that you are so determined!
You've mentioned that we can't lose fats and grow muscles at the same time. But according to what I've known, we must lose those fats that cover the muscles, in order for the muscles to be visible, isn't it?
Thanks a lot.