Here's the evidence, and different ways of thinking about accomplishments:
First, this article on "staying happy" when things are not going well. I'll have more to say about Burkeman's book tomorrow, but this article is a nice intro to the idea of positivity in the face of negative news: "Paradoxically, it’s through taking action, despite not feeling happy about the situation, that a deeper kind of happiness can arise."
The above leads nicely into this manifesto, a re-imagining of the news from the stable and positive side and a reminder that most humans are good (normal, boring) people.
[Warning: adult language ahead.]
This information is all great if you have a direction you want to struggle in, but for all of us with a "passionless unknown," here are three simple steps to keep going until we stumble upon it...
...and permission - encouragement even - to not love what you do.
Another echo of the same message: "I just worked at whatever I was working on and ended up wherever I am. I continue to approach work and life that same way today."
Followers of this blog know what's coming next...my favorite Elizabeth Gilbert video, the final word on how to think about goals/passions/life choices (it's my top bookmark, y'all):