sentence: He put his switch from law to politics down to `` a combination of a mid-life career change and a mid-life crisis ... I wanted the challenge of representing the Conservative Party in a parliament which was an ambition I had harboured since my teens , but which I had not been able to put into effect in the preceding 20 years because of career and family commitments . ''
question: what might _ combined _ _ _ ?
answers: a mid-life career change and a mid-life crisis