A rule of thumb for weight is this - 100 lbs for 5', and then 5 lbs for every inch after that - so 5'4" = 120 lbs APPROX. This really is just a guideline - go by your looks, more than the reading on the scale - if you are large boned, you can weigh more but look thinner..
First, don't listen to people who say 'eat less' - what are you gonna do if you are only eating 1200 calories, and still overweight - go down to 1000 calories? And then what - 800? Never do this - it isn't about the amount of food you eat, it is about the TYPE of food you eat. I eat TONS. I eat all I want to eat, and I lost 20lbs this summer (and it hasn't come back) - so what I am going to tell you WORKS!
- give up sugar. Before you groan and say that is too difficult, hear me out - it only takes 3 days for your taste buds to adapt to a change, and you can use Stevia as a sugar substitute. Stevia is all natural - it is the leaf of a plant that is ground up. It's been used for thousands of years with no side effects. It is healthy for you, doesn't raise blood sugar, and isn't man made.. you can get it at the health food store. I use it all the time in coffee, tea, iced tea, on fruit.. you can't really bake with it, but it can be added to a lot of things. For me, it is a great alternative to sugar.
But, the major way to get over sugar cravings is to eat fruit.. Fruit is healthy, full of vitamins and minerals (this is what your body needs!), and it totally kills a sugar craving.. so you feel like a cookie, eat a banana instead.. and you will find that the sugar craving is gone. People will say 'fruit is bad for you - it has too much sugar in it' - that is just not true - again, look at the weight I lost - that is my proof! God made fruit on this planet for us to eat! God did not make fruit JUICE though - and that is the difference. When you separate the pulp from the juice you 1) lose a lot of the nutrients, making it less healthy, and 2) you get rid of the fiber - which we need for digestion, and which slow down the sugar - juice without pulp is just like drinking soda - all the sugar goes straight to the blood stream, whereas a piece of fruit in it's whole form, must go to the stomach and be digested. The sugar then metabolizes very slowly. Our bodies LOVE sugar. Our muscles run on glucose, and we have a 'sweet' taste bud - showing that we need sugars (cats have a protein taste bud - they need meat, as a comparison).. but the KIND of sugar we need is what is important! Fruit in its whole form is healthy and no one ever got fat from eating oranges, bananas etc..
I start my day with a huge smoothie - I take a bunch of whole fruits, and throw them in the blender - I start with 2 bananas (they give a nice smooth consistency to the smoothie), then I add something sweet, like pears or pineapple or mango, I also add some kale or spinach - cause these are super healthy and you never taste them in the smoothie because of all the fruit! then I add enough water to make it puree.. and if it isn't sweet enough, I add a bit of stevia.. Also for breakfast I have about 6 almonds, or 4 walnuts.. if you google 'nuts and weightloss' you will find that the thinnest people in the world eat nuts regularly (again, we are told nuts are fattening, don't eat them! but it turns out we don't digest the fat in nuts in the same way as we do in meat etc.. nuts are a healthy fat, and that fat helps deliver the nutrients we eat to the cells.. another really good fat is avocado - I eat 1/2 avocado almost every day for lunch and that is 15g of fat - which sounds high, but I am telling you, if it is natural, it is healthy! Stay away from oils when you can.. Lastly for breakfast I have toast with a bit of butter and a cup of coffee - this is a huge breakfast of probably 500 calories - but look at it - butter is natural, nuts are natural, fruit is natural, the stevia in my coffee is natural.. no chemicals, no additives, no artificial ingredients, no added oils, no processed foods, no white sugar! Just real food..
I want to explain to you what white sugar does to your body - it makes it impossible to lose weight.. Your blood system can only have about 1 tablespoon of sugar in it at any given time or you go into diabetic coma. So, when you drink a coke, or have some fruit juice, or eat a candy bar, a cookie, cake etc.. the body immediately sends out insulin to 'sweep' that sugar out of the bloodstream - it HAS to.. so where to put the sugar? The insulin shoves the sugar into the fat cells - remember this really is life or death for the body - the sugar must be removed from the blood stream, and it is easy to put in the fat cells.. where the sugar then TURNS TO FAT!! You can google this, but what I am telling you is true.. and so, let's say you eat a candy bar, then feel guilty and decide to go for a good long exercise session to burn it off.. did you know you will not lose weight?! Remember that sugar you just ate has just been REMOVED from the bloodstream, to keep you alive.. now that sugar must stay there, and be metabolized, and turned into fat - this takes about 5 hours. For those 5 hours, insulin 'locks the door' on your fat cells.. the sugar is in there, so the fat cells must stay locked, until it is no longer dangerous.. during that 5 hours, your body will resist with all the power it has, not to open those fat cells/ burn fat - because it doesn't want that sugar flooding your blood stream again.. you can see then, if you have a danish at breakfast, a coke at lunch, a cookie for dinner - you have gone the ENTIRE DAY with your fat cells on lock down.. you can exercise FOREVER, and lose very little fat.. but if you don't eat sugar, your fat cells are open and even the littlest exercise is gonna make you burn fat..
- so, when you want sugar, eat fruit in its whole form. Eat it as a snack, as a dessert, eat it breakfast lunch and dinner!
- stay away from highly processed foods - the body has been dealing with natural foods for thousands of years, and knows what to do with those, but artificial ingredients are a new thing and the body doesn't know what to do with them. Some of these artificial 'foods' trigger the appetite, make you eat more, and bottom line, they do nothing to nourish the body! They really shouldn't be allowed to be called 'food'.. they are edible, that's all..
Next - eat starchy foods - whole grain bread, oatmeal, popcorn, brown rice, potatoes, non GMO organic corn - again we are told that starchy foods make us fat - not true - watch the video on youtube "the starch solution" - starchy foods are low fat, fill us up, are healthy and look at ancient cultures - Chinese people on their traditional diet eat rice 3x a day with a bit of veggies, and a tiny bit of meat.. chinese people are not normally fat..
So, for lunch, I usually have a big bowl of rice, with some veggies, and maybe a little meat - I try never to add oil - I eat 1/2 avocado for fat.. sometimes I eat a baked potato with a little butter, or a huge plate of mashed potatoes.. dinner is much the same - I do eat pasta occasionally, but now we are getting into the not so good processed wheat - so I try not to eat too much of that.. For lunch and dinner, I probably eat another 1000 calories - so 1500 for the day - I am NOT gaining weight, and I barely exercise. You are much younger than me, and probably more active, so you can definitely eat more than me, and not gain - don't worry about calories so much - concentrate on eating REAL foods, and staying away from sugar - do not use artificial sweeteners - they make you gain weight!
Weightloss is 85% diet - exercise is great for toning the body, but it doesn't cause a significant loss in fat..
Last tip - watch the video 'the 5 - 2 diet' on youtube.. basically, you limit calories 2 days a week - this works.. I do this occasionally when I want to lose a bit more..
hope this helps