At best you might start up an independent consulting firm, but you'd have to have multiple clients and spend a lot of time on sales and marketing (of yourself). Gerald Weinberg recommends you make your hourly rate 5-6 times what you want to earn just to allow for all the overhead (http://www.amazon.com/Secrets-Consulting-Giving-Getting-Succ... or get it new from the publisher: http://www.dorsethouse.com/books/soc.html).
At best you might start up an independent consulting firm, but you'd have to have multiple clients and spend a lot of time on sales and marketing (of yourself). Gerald Weinberg recommends you make your hourly rate 5-6 times what you want to earn just to allow for all the overhead (http://www.amazon.com/Secrets-Consulting-Giving-Getting-Succ... or get it new from the publisher: http://www.dorsethouse.com/books/soc.html).