For me, it was the loud mechanical stuff. Didn't have problems with math but when we had to do the mechanical stuff, hence I went civil, where there weren't any decent jobs and boring jobs, go I went to Wall Street. I didn't like the geology or soil mechanics. You really have to like sitting to deal with a problem -- for a long time before you get to work on the big stuff. Going to Wall Street allowed me to deal with the big picture of a company over a short period without sitting and dealing with how to design an I-beam for 10 years. You really have to be suited for the work.