It doesn't matter where you start in life. You can achieve anything. You may not believe this because you're feeling a little lost in your current situation, but there is always a way. For example, if you don't know where to start, go to the library and ask for the books and resources that can help you get started.
Go to a local employment office and ask for advice. There are ways to get to where you want to be in life. These people are there to help individuals get on the road to success because if they can help you, then they are also helping themselves. They have nothing to lose by trying to help you find work or provide you with the information you need to obtain the required training.
One other thing I would like to point out—never be ashamed to ask the questions you need in order to better yourself--ever! As this quote points out—you are in control of where you end up.