So, your income from your marketing efforts starts to be somewhat tangible. Or you just see that you could grow your income much more than if you keep your job - focusing on your marketing activities only. Count me in. ;)
Here are several points for you to consider, when you're making your decision.
1. It's better to acquire at least some financial knowledge first.
I'd go to Robert Kiyosaki and his games "How to Quit Rat Race," his "Rich Dad, Poor Dad" really seems to drive point home.
2. Define your goals, so that you knew where you go.
I recommend to take this free mini course: http://www.goal-setting-guide.com/goal-setting-tips.html "7 Goal Setting Tricks" - it will put you in right direction.
And I highly recommend John Reese's brain dump exercise. http://www.marketingsecrets.com/massiveissue.html
3. Accustom to some time management system, so that you could make best of your time, not going in too many directions and not trying to do it all.
I'd recommend Brian Tracy's "Maximum Achievement" and Dan Kennedy's "No B.S. Time Management".
Read also this article by Brian Tracy: http://www.mercola.com/2002/jan/23/efficiency.htm
That question "What's most valuable use of my time, right now?" will help you a lot in getting your priorities straight.
4. Start practicing your organized work at home today - little by little, you'll get used to organizing your work best way.
As Jim Rohn says, "Never begin day until it's finished on paper." - Always make a plan for your next day - even a small task, but try to get it done.
5. Sometimes it's better to postpone quit until you have enough money, courage, whatever... but sometimes we succeed more, when we just dive in.
It seems like when we have no choice, we get more determined to succeed, more focused, so we can accomplish much more.
Jim Edwards had a lot to say about it: http://www.howtogetanythingyouwant.com/
6. Work smart, not hard.
When your plan for day is ready, look over it and ask yourself: "How can I accomplish these tasks quicker?"
You'll start to see then - you may combine some tasks together, or you'll find some way to outsource, or you'll notice, that there is a certain time of day, when you work more efficiently, so you'll schedule most complicated task to that time slot, or you'll see a need in some tools that will help you.