Yeah, Ive started my own Tutoring business - its not hard, as long as you stay organised. As soon as you let things fall behind or go on holidays, it's so difficult to catch up.
But yeah, its definately worth the effort and its a great eye-opener. And I am only 20, and currently have 300 tutors contracted out from my company running one-on-one tuition in the student's homes. Currently I am the only tutoring company like this is Sydney... and as far as I know NSW...? I cater for students from the Blue mountains right through to the North Shore and down to Southerland Shire...
Like I said - if your interested, stay focused and stick to your dream. It's never impossible, no matter what people say. You've got to take chances sometimes...