I haven't had a chance to read the whole thread, much of what everyone needs to do is doable. The reason people DON'T feel more comfortable putting their ideas into motion is because they're scared to fail. It's like not wanting to approach a girl because she's NEVER going to want to marry you. Sorry for the stupid analogy, but it's the first one that came to mind.
The best thing for you young people is to learn from people that already know what they're doing. It doesn't have to be in a field that you are interested in working in. You just have to learn. Learn how to act in hard situations. Learn how to save money. Learn how to treat people. Learn what strategies may or may not work for you. Learn what you do and don't want. Learn how to rebound from failure.
The reality is... MOST of you posting in this thread will fail. And that's not knockin anyone. It's just reality. But, HOW you fail is important. If you don't have a plan B.. or if you don't have something to fall back on, you'll be stuck. Perhaps at home with your parents, maybe in a TON of debt, etc. Just learn how to accept the bad with the good.
Another thing, do not expand too quickly. it's better to try and hit a bunch of singles and doubles than to try to hit your first home run.
Understand that you MUST be patient. Many businesses will NOT be profitable in the first 12-24 months.
Sometimes people will just want your ideas, and NOT your products. Make sure you take the right steps to secure your assets.
SAVE money. Emergency money. You will be hit with fines. You will have a machine break. You will have to pay unemployment, taxes, fees, bills that you didn't expect to see... etc. You may have to hire a lawyer to defend something you did (or didn't do). Just have some money set aside.
Stay away from too much credit. There are many companies that LOVE giving money to desperate start ups. If you can get a loan from a family member or something else, do that. This is NT, sell your shoes if you have to.
I saw some posts about school wasting your time/money. To a certain extent, that can be true. But, it is NEVER bad to have an education; a backup plan if you will. Learn as much as you can. Part of the most successful parts of what i've done have come from 1 (maybe 2) teachers in college. The context they taught was great, but their life experience, their mistakes, and their current investments/ventures they shared were very valuable. Office hours picking their brains was also wonderful. Believe it or not, there are many people that are willing to help you out.
Lastly, think about what people want or what people need... and make that an integral part of your business. If you're selling T shirts, make a T shirt that NO ONE has ever seen. If you're opening a restaurant, have 1 or 2 signature items that will BLOW your customer away. You get the point. Have something(s) that will separate you from the competition.
And what I did?
I took advantage of people's attraction to drink alcohol. When people are celebrating, they drink. When people are happy, they drink. When people are bored, they drink. When people are sad, they drink. When guys are trying to get laid, they buy drinks. Alcohol is recession proof. Many, many people will always set aside money to go out... and when they do, they will consume alcohol.
I hope this helps. I can help answer many of your questions if you need them.