Jon Novak, PMP shares a powerpoint presentation on things to consider when deciding to go into consulting.

"My first “depressing” realization upon joining the workforce out of college sitting at my workstation at a large corporation, suffocating from smoke from my co-workers(back then smoking was permitted at workstation) and realizing that each day between 8 am and 5 pm I am surrendering my control/life to

an entity with which I am not necessarily in accord on many points and thinking at that moment “and I have 45 more years of this?"? I will say this was a very first steps in a long process of discovering myself and what drives me."