Huge mistake?

So, I turned down the job offer I had. I can't help but think it will turn out to be a huge mistake on my part but I was so torn and so confused and so unsure about the whole thing and I felt that if it were really the right move to make (taking it, that is), wouldn't it be an easy decision to make? I'm not sad that I turned it down but I will become sad if I don't get any other offers in the near future. I'm just sick of applying for jobs and sick of being in debt and sick of not working. I'm sick of waiting, too, because I've felt like I've been waiting for something for three years. First, I was waiting for grad school to start... then I was waiting for it to finish... and now I've been waiting to find the right job. But, anyway, just because I'm sick of all those things, does it mean I should just accept any old job that is offered to me, regardless of how awful and boring and monontonous it is? I say 'no', which is why I turned down the job.