I agree with the sentiment. There are many ways of 'doing what you love'. You can love the tools and languages you get to play with, you can love doing a good job, you can love being part of a really cool project, you can love being challenged and forced to learn and improve your skills, you can love working with really intelligent people. The list goes on...
in my experience: I like the work I can do well.
then it is to find out what one does well... I can tell my abilities about that work I have been with long enough to withstand the initial bootstrap. Long enough to find out how the routine would look like. Always dependent on workplace, co-workers, topics, software/hardware, money, future opportunities...