So given my job as a cashier I have a lot of brain down time and was wondering if there are any mental exercises that one can do while alone to help improve my rationality. 

Some background about me. I currently live in seaside,ca. Have a bs in psychology and an A.A.S in information technology network administration. I currently am a cashier at a gas station but want to find a better job for many reasons. I want a job that will fulfill my high need for analytical thought(high in need for cognition if you know what that means) and problem solving and that hopefully maximizes the amount of time i can be with my wife (who is in the military and "works" 7-3. I am pretty new to the job search thing because i spent 6 years in college with the same job as basically a system admin. (note of worry about all jobs have already developed carpal tunnel and had surgery and my symptoms may be returning

also i'd like to add some interests of mine. During college I was active in my atheist group (after i became one) and have been a pretty big activist since starting college. I try to be as involved as i can think to be in the skeptical/atheist/lesswrong community. 

So my question is given this information what are the best methods/ resources to help me in my job search. What i have been doing is applying online using multiple job banks but have not even landed a interview for anything related to computers I tried looking my self but was overwhelmed by what seemed to be contradictory messages. Any help i can get will be appreciated.

Edit:Thanks to advice from nickernst i will break down the above to a more manageable set of questions

1. what types of jobs will i enjoy that i would have a chance at given my background
2. related to one is there anything i could add that would let me get a job that i will really love
3. what jobs are avaiable to me
4. what would you suggest for the "process" of job searching to increase the likelihood of interviews
5. What are some common failure modes of people in the same situation?

I know there is some overlap between the lesswrong community and the skeptics community. So my question is if anyone on lesswrong is going to skepticalcon this week and if so if you'd like to meet up there.

Oh and in case anyone is curious its in berkley,ca

I have been looking for rational motivation quotes because most quotes I hear don't seem to be. As an example i see in sports "pain is weakness leaving the body" this seems irrational and maybe harmful.