Do diet teas and meal-substitute shakes work to lose weight?

I've been trying to diet for over two years. My goal is to lose about 25 pounds, but the most I've been able to get is 15, and I can hardly keep it off. I concentrate on eating very little and since exercise is so hard to keep up, I pretty much starve myself to death. I manage to maintain the weight for a month, and then I lose control again. I've been thinking about the various diet products in the market, such as diet teas, herbs, meal- substitution shakes, and other medical products. I'd like to know what kind of side-effects they have, and how effective they are. (Some boast a seven-day plan, but that seems hardly believable.) Also, I'd like to know how well-researched the information is on these products (i.e., are they long-term enough to cover all the side-effects?) As for aspartame, is it really harmless, or is it just not researched yet?


How can I find help for my substance use?

I have a huge dilemma. I have an addiction to a certain drug that has turned my life upside down. That drug is crack cocaine. The worst part about it is that nobody knows this but me. Nobody knows that right now, my life is on the brink. How do you express this problem to people who don't even have a clue as to what you are dealing with? How do you reach out to the people who you love and trust when you are so ashamed of the truth? One thing that I do know is that I'd better do something fast because if I don't, I will lose my fight with life. HELP!!