Whats the average salary of the average seo sole practitioner?

[john]

I am a young individual...... that is thinking about getting into search engine optimization or accounting.

I am very analytical and a good strategist, but I am also good at working with numbers.

As any of the two, I'd like to make around 250K a year (I live in Canada).

Which one has more money in it?

Is it possible to make 250 K a year as a sole practitioner sem/seo/internet marketer.

Any answers appreciated.