Where is My Job?

I always have this fear in the pit of my stomach that no one is going to hire me because I am just not good enough. I am now feeling the same thing as I felt 7 years ago when I came to America and was looking for a job. I had gone to an employment agency called Appleone. I said I was willing to take any kind of job, temp, temp-to-hire, whatever, just to get my foot in the door. So I got kinda desperate when after 2 weeks I had not heard a peep from them. I started looking for a job on my own and found one that paid a MEASLY minimum wage which at that time I think was $6.25/hour. You will realize that unless you have worked in America before, most time your previous work experiences will count for zilch! Furthermore, when you are asked what your last salary was, the computer won't even allow you to put in the amount since an error message will come on to say that you have made a mistake, there is no possible way you earned so little for a month's work, may they suggest instead that you meant WEEKLY? So there ya go... so anyways, back to my story... So here I was working in this hole in the wall company processing invoices for a wireless service provider when I get a call from Appleone 3 days later to say they have a job for me. Pay is of course considerably higher. Can I start next week? I say yes. (BUT OF COURSE!!!!) So I told the supervisor that I don't think this is my kinda job and I don't think I will be coming back. Well, she immediately calls her boss and then the boss came on the line and told me that although I have been working there only 3 days, they liked my work ethic and told me I was really efficient and how about they bump my salary up a dollar and maybe in 2 years' time, I could even become a supervisor myself and get a higher salary of x amount of dollars? Well I thanked him very gratefully and said no thank you. That is because what I would be earning in my new job is already higher than what the poor supervisor is earning! Well she is very young and so is the boss. They might not mind starting from the bottom of the pile but I am too old and cannot afford that. Got bills to pay. They are probably still living with their parents and are carefree.
So here I am 7 years later, same place, same Appleone, same situation...it's like deja vu. And the same 'fear' in the pit of my stomach. I will let you know soon if I resort again to accepting minimum wage!