Ask HN: Young sprout looking for advice from Wizened Sage

Hi! About 4 months ago I got my first tech related job as a software developer at a company that makes BI software. I don't think this situation is the best fit for me. In my spare time I've been studying Haskell, but (with much regret) I'm considering switching to a more widely used language to increase my job prospects.

Some more details: -I live about 50 minutes from NYC. -I'm strongest with Java and don't have much proficiency with anything else

I'm looking for advice. What should I study if I want to increase my marketability JS/RoR/PHP/??

Thanks!!