I find that most of the time (though not always) it is possible to influence the dynamics of your job. This starts with your relationships with your manager, peers, customers, and if applicable, subordinates (no small task). Relationships seem to be key - if you have somewhat sane people around you, you can create those positive relationships over time that can then work to give you space to make other aspects of your job better. Not only does it become a more pleasant work environment (due to better relationships), but it very often offers extra latitude to try some new things. For instance, my own job satisfaction is increased when I am given the opportunity to innovate or improve things. When I find the environment is not going to be conducive to positive relationships and possibly innovation/improvement, I typically start the process of looking for somewhere else to be where I can bring a positive influence.