Choice - an act of selecting or making a decision when faced with two or more possibilities.
The irony of realizing the choice you made is not what you intended to be. Having secured an internship in a think tank, I realized should I fail to perform satisfactorily, my career in a particular sector is pretty much done for. I do enjoy the occasional research work I did for some of my projects and report writing, but in a formal setting where your bread and butter hinges on it, it seems like a no-no.
Till this end, I wonder what sort of trouble I am getting myself into.