I'm getting worried

When #3 son was ready to start school, I decided that it was time for me to get back to a "real" job. I had been doing daycare at home and it was fun but I was ready to actually use my intelligence for something other than reenactment scenes from Barney. My background between college and arrival of #1 son, (13 years) had all been medical so it only made sense that I stick to what I knew. The only problem was if I went back to working at our hospital I would be stuck with crappy shifts and have to deal with an administration that was less than "fun". Anyway, I told hubby that I wanted to work somewhere flexible, maybe be my own boss, be here to get the kids on the bus in the morning and off in the afternoon, be able to stay home from work if the school called and said one of the little love's was puking and needed to come home and of course I needed to make money (after all that is why I was going to work in the first place). Once he picked himself up off the floor laughing he told me to tell him when I found that job cause he wanted to work there too. Well within 2 weeks, I was up and running with my own company. I contacted some of the docs that I had worked with all those years and told them I have a computer, time and a hell of a lot of experience in a variety of medical arena's and then I asked them what I could provide for them. I landed my first client, handling his office transcription. With my expansive experience in various areas of medicine and the fact that he knew my work ethic he hired me TO WORK FROM HOME~EUREKA! He then told one of his doc buddies about me and within 2 more weeks I had 4 accounts (talk about timing, the lady that was handling all those accounts closed up shop abruptly so I rode in on my white horse and cleaned up her mess, endearing me to my new clients.) Let me tell you I LOVE MY JOB. I am the best boss in the world(no I am not completely conceited, that is what my staff tells me). Now I am getting to the worried part. It seems like fewer and fewer docs are using transcription services. I have added several clients over the years but lost some due to their retirement. I switched all my clients over to digital and with the wonder of the internet, I can have accounts anywhere in the world. The problem is many offices are now "owned" by large corporations (ie: hospitals) and have their own network they use for their office transcription/charting. That doesn't bother me as much as the ones that go offshore for service. It is reeeeeeally unfair and down right un-American besides, how can I compete with someone that is only making $3.00 a day-and is happy with it?! Anyway, this weekend I am going to send out another mass mailing and see if I can pick up more work. I have the best staff in the world and I don't want to lose them because I can't keep them busy enough. God forbid that I should have to go get a "real" job.