I was in the same boat, but went into IT (Score 1)

I worked in quality control for 13 years before finally taking that leap into IT. The pay was the hardest thing to deal with, but I managed to get into it without sacrificing too much. What helped was me being able to bring my skills from my previous career to integrate into my existing one. Even though it doesn't sound plausable in your case, it actually may be. You may be able to use your previous experience to work with future suppliers or potential customers. I think what your going through is normal for a lot of people in many career fields. A lot of us were chosen by our career and not the other way around. Good Luck!