For some individuals navigating the mid-career blahs involves taking on added job responsibilities or even changing positions within their firms. Others seek out new experiences by shifting firms or possibly taking on like-kind roles in new industries.While there’s work involved in all of those cases, the degree of difficulty is relatively low for job changers compared to the challenges faced by those I reference as career reinventors. For this latter group, the process of determining what to do is the first big challenge.