Shortstack in early position

[TimM846]

I've noticed that I've gotten myself into trouble late in scheduled tournaments by pushing all in with a good hand in early position. For example, in the Sunday night 200+15 on Ultimatebet a few weeks ago, I was 24/26 (top 20 money) with JJ in first position. I had about 3700 chips and the blinds were 300-600 with 50 ante (IIRC) and I pushed all in (it would have cost 600 to limp in or about 2200 to bet the pot). As soon as I got a reraise from middle position I figured I was beat and correctly so (he turned over KK).

Was this a bad play on my part? What if I had AT in this position? Should I fold it, limp in, raise? Would it make any difference if the antes are high and taking down a pot could be the difference between moneying and not moneying?

In the above example, the JJ was tough to get away from as I needed to catch a hand before too long and the blinds were about to hit, but had I played it differently I may have been able to survive and money. I'm just looking for some general comments on how to play with a shortstack late in a tournament, particularly out of position. Any input would be greatly appreciated.

Thanks!

Tim