I seem to be somewhat blessed (or cursed) with the fact that there are multiple things that I can do reasonably well.
Because there are so many subjects I am interested in I am actually not really good in any of them. If I write down what I would like to be in the coming 25 years it at least involves that I would like to be really good at something. Here I define really good as a subject where I am the most productive in (and which I like, but that will likely coincide).
How do I determine which direction to go in my studies?
I know that this question is quite subjective but I have tried to make it as non-localized as possible.