Investing Our Energy

We often read or hear about fulfilling our tafkid, our life's mission.  Aside from learning Torah and doing mitzvos, which is incumbent on us all, we might wonder: what is my particular life's mission?

Ideas for direction include 1) that which you are drawn to and 2) that which you find difficult.  True, if you are drawn to something, it could be because that is where your tafkid lies.  At the same time, if some area of mitzvos is difficult for you, that could very well be where your tafkid lies, although there is something contradictory about that, isn't there ...

I came across this line which I liked, which relates to figuring out where to put one's energies.  It goes like this: "It is not something that I believe I should do; it's something that I cannot help but do."