[napoleond]

If by discipline you mean "type of work" then no, it doesn't matter. If by discipline you mean "self-discipline", ie. "how much time you actually spend working in a day" then it does matter, with the caveat that clients pay for results, not time-in-chair.

[bmac27]

Sorry for the confusion. I meant the former, as in my case, search marketing (SEO/inbound marketing) vs. programming. Most people I know working full-time in search don't approach the salaries/rates that developers make and speaking broadly, I know a lot of skills translate better in consulting than others do.

That said: bottom line is that I should be charging a lot more than I am now. :)