the most important i think is motivation. and it seems you have this already
and nutrition. dont just eat jello. thats not the way to go. you need variety. fruits and vegetables, and daily vitamins. plenty of sleep will help you have enough energy for excercising.
Personally im a runner, and whenever i want to shed a few pounds, running works for me. i do 4 miles a day. but jumproping, bicycling with some endurance, circuit training, and dancing all help. If you stick with the same fitness schedule, ytour body will adapt to it and you wont have the same results.Do your research, buy some books, and control your tempations. Looking at pictures of what i want to look like keep me from eating junk food. Soda is horrible for you, so completely quit drinking it.
as for the six pack, there is no way to spot reduce fat. Everone’s body is different, some ppl will lose weight from their arms first, some from their face, chest, or thighs. You’ll just have to toil through.

And Time is needed too.
It isnt easy losing weight,but if you educate yourself and stay motivated, you can make sure all your energy isnt wasted.

GOOD LUCK!

The more muscle you have the faster you can lose weight as they need so much fuel even when you are doing nothing they just keep burning fuel.

You have to speed up you metabolism to lose fat…
to speed it up you must eat more earlier in the day

Six packs come from muscle and muscle dose not form when your body is underfed

Remember skinny is as ugly as fat
you dont want to be either
You want to be fit to survive
and happy just to be you

What you eat for breakfast and lunch powers your body
What you eat for dinner and supper is put into storage..

Get up before dawn, have a big breakfast – No Sugar, lots of grains and protein. then exercise to a sweat and heavy breathing all in the first hour of being awake… the more the better and at first light.

You are informing your metabolism that it needs to wind up the energy cause you are working hard…

The faster your metabolism the more fuel it burns. Think of it having 10 speeds 1 is when you are underfed and no activity and ten is when you have a full tank of fuel and working like a one armed guy putting up wall paper..

What speed and fuel consumption do you want your body set at.

If you take it easy during the first hour of being awake, your body closes down to protect your store of food (Fat) for later and no amount of dieting or exercise will ever shift the weight

Remember muscle is the secret, its like your engine the more you have the more fuel it burns.

If you build up, at first you will gain weight then the muscles start demanding constant energy and the fat will be burnt up in no time at all… Unless to ear sugar… The body converts fat into a sugar, but only if the body dose not have another supply.

with good muscle development it is almost impossible to keep excess fat.

PS..
an interesting experiment is when you are feeling great and energetic… and exercising well – Have a thick shake and watch you mood drop to depression and the sleepy exhaustion wash all over you….

I did this with my coach, I didn’t believe him but it is amazing…

Its the eating of fat and sugar together, it just kills all energy and drops the metabolism to almost minimum. thick shakes are very high sugar and fat from the milk and ice cream.

Sugar is your enemy, self discipline is your friend

DONT DIET instead Change your Diet

Dont count calories, You will notice only sickly starved girls and fat people do that, it dose not work – ever

eat heaps, of green veggies always
Grains, dairy, protein in the mornings – BIG Plate -
Salads, veggies, fruit, protein for lunch – Medium Plate -
Salads, veggies, dairy, veggie protein for dinner. – Small plate -

Your goal of 120 pounds is sick
you cant have muscle and look like a scare crow, what is more important, a sickly weight or a six-pack you cant have both.

Losing 20 pound in a month could kill you, when your body runs out of fuel it will start to reabsorb the protein from your heart and organs to use as fuel, damaging fat cells is one thing but once you damage your heart and kidneys you are shortening your healthy life.
..

jello isnt the healthiest thing to be substituting meals with. its stupid that you are doing that. try the kelloggs bars ~ only like 100 calories. your body need calories and carbs to function and for your metabolism to work proporly.