As a former workaholic, it can be cured. Workaholism can be fueled by an intense drive to show others how hard you can work (the classic I'll show them attitude). Which is good because you can divert it to other interests (e.g. not your job). For example, I diverted my workaholism to Toastmasters and it simultaneously saved my job (was going to quit, feeling underappreciated) and I stumbled into a great group of people (many, still friends).