Best diet plans

Does the word "diet and weight loss" immediately make you think of an unpleasant weight-loss regimen? If it did, you are probably not alone. For example, consider the use of the term "diet" in marketing food products—it usually describes foods low in calories, such as diet soda. But there is another meaning of this word. Diet can also refer to the food and drink a person consumes daily and the mental and physical circumstances connected to eating. Theoretically there are two definitions of nutrition: "the sum of the processes by which an animal or plant takes in and utilizes food" "the act or process of nourishing or being nourished"

While both are correct, the second definition is more inclusive and suggests that food involves many different things, including love, satisfaction, and enjoyment. Nutrition involves more than simply eating a “good” diet—it is about nourishment on every level. It involves relationships with family, friends, nature (the environment), our bodies, our community, and the world. Choices about nourishment are very much linked to other human beings and other life forms on this planet, so healthy (and unhealthy) decisions have great impact.

Diet plan question ?

I am currently 5'6 and 160 pounds. I want to go down to 120. Here is my diet plan that I have been on for about 2 days now and of course it is much too early to see results but I would like some of your opinions on it and suggestions on how to make it better:
Diet consists of 5 small meals per day but the only things that I am allowed to eat include:
egg whites (one whole boiled egg once a week)
basic salad (lettuce, cucumber, lemon juice)
soy milk
only one fruit per day from the following selection- apple, grapefruit, handful of blackberries.
green tea (no sugar, just one tea spoon of honey)
plain chicken breast (not fried)
white fish (again not fried)
celery (no dip)
coffee (black)
and my exercise plan includes:
-one hour of elliptical in the morning
-one hour of elliptical + half an hour of weight lifting/ muscle building exercises at night
-50 sit ups per day
-sundays are my rest days, so no exercise

Answer:

I think your plan sounds pretty good. The meal part is perfect, low sugar and low carb, so you should be fine.
Your exercise plan could have some more cardio incorporated into it though. Try taking up running - it's good for your core, and it slims down leg muscles! Too much elliptical can make your thigh muscles bulky and large. Along with your sit-ups, why not add 20 push ups to that too? And on your rest days, maybe do some stretching, because it helps with the build-up of lactic acid and increases your range of motion without tiring you out.

I think with the combined effort of a healthy diet and constant exercise, you should be able to lose all the weight you need! You could even add a few other foods to your diet plan, as long as you exercise, because everyone needs a bit more variety in their diets.