Yes, I have been up and down with my weight, all my life. Your body is on a seventeen day water cycle. Some days, you are retaining more water, than others. The one day, you weight may dramatiacally drop, if you relieve the excess water. Don't get discouraged, when trying to lose weight.
1. Weigh yourself first thing in the morning, when you wake-up. It is the most accurate measure of your weight, as nothing was put into your system yet.
2. Diets are a waste of time. I found after becoming a type 2 diabetic, eating several small meals a day works the best. You don't need to necessarily deny yourself everything, but it's all about portion control.
3. Eat slower as your body needs to get the signal from your brain, that you are full.
4. Lifting weights is the best form of exercise, because you burn calories after you finished lifting. Once one step off the treadmill, that is all the calories you are going to burn. Losing weight without combining these two things, is a recipe for disaster.
5. If going to a restaurant, ask for the doggie bag at the beginning of a meal, as they serve you twice the food you need.
6. Part of weight control is psychological, as when you are a small child, your mother put a certain amount of food on your plate, (probably more than needed), and your brain is tuned to looking at portions, as saying to oneself, that is the amount of food I need to eat, to be full. How many times we are full after eating half the dinner served, but continut to eat, because we are trained at an early age.
5. Pushaways from the dinner table, helps a lot.
I have lost 8 lbs in six days, by going back to eating controlled portions. It's also a matter of willpower, Sometimes, I have to ask myself, "do I really want to eat something, or get down to a weight that works better for me.
I hope this helps.
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"It doesn't cost "nuttin", to be nice". 
MOM
I just want to do the right thing! Uncle Joe, (my hero).