Since leaving my former employer, I've gotten quite a few emails along the lines of "congratulations, I wish I could..."

The thing is anyone can make a major life change - all it takes is a few things:

1) Recognizing the status quo is not working for you, and

2) Get inspired and create a plan of action

I can't help you much on the first one, but if you make it to #2, here are some things that can help.

Inspiration

Four Hour Work Week - Timothy Ferriss 

Getting down to four hours may be pushing it, but there are lots of great ideas in this book. It's pretty focused on setting up a "hands off" business, but the other "zen" ideas are really good - mini-retirements, long international trips, becoming an expert etc.

TED Presentations

TED finds great speakers who talk about really cool stuff. These are inspiring - start with Hans Rosling - who would not want to work with/for him? What I think it so great about these presentations is that you see people who are genuinely excited about what they are doing. Given the general level of job dis-satisfaction today, it's good to be able to identify real enthusiasm when you see it.

Free Prize Inside and The Big Moo (Seth Godin)

You could also add in all his other books, but these are two that I have read. They are both packed with good ideas - from how to stand out in an organization, selling your ideas, and marketing 2.0. It's worth noting that if you are planning a change, reading about marketing is good - even if the only thing you market is yourself.

Presentation Zen Blog

Like it or not, Power Point is in your future. The difference between an average (i.e. painful) presentation and great presentation is easily seen, yet difficult to produce. This blog covers all things related to giving presentations from slide design to  speaking tips. It also has lots of links to great presentations.

Finally, when you need to vent, but can't actually yell at your boss, head over to True Office Confessions and let it all out (anonymously). It's also comforting to know that you are not alone.