I recently read Seth Godin's book called "The Dip". No it's not about a boss that you had at your previous company - it is the decision point we all come to in our business lives when our current position becomes a dead end. Seth refers to it as the "Cul de Sac" of your engagement with the company that is employing you.
There are a few ways to handle this - either put your head down and work hard - or just quit. Seth goes on to say it is absolutely OK to quit. We have been taught our entire life "Winners never quit and Quitters never Win" - I believe Vince Lombardi came up with this quote. However, Vince was the coach of the Green Bay Packers in the 60's and early 70's well before the technology age. Back then workers stayed with their companies for several years (even their entire working lives). As we know, today is a totally different story. We are still climbing out of the last recession and variable contracting is here to stay for sure. I'm not doing a book report here - just recommending it as a very objective read for any of us that are feeling the "pinch". Seth goes on to explain the reasons why you are feeling frustrated and gives some great examples of how individuals quit their jobs - even though things were going great - because they knew deep down this was not something they wanted to do forever.
So don't feel bad if you are under quota - there are decisions and corrections that can be made to help you out of the situation.
I think of the famous video excerpt from an old (really old) Hollywood Star - Jimmy Durante singing - "should I go or should I stay" . We have all found ourselves in this position.
You have to decide for yourself - but Seth can help.
http://www.youtube.com/watch?v=bY-zmJ1VCQI
