Yes - where does it break? At the nut or at the bridge?

The G string is the one that most people break. It is the lightest weight of the wound strings and is the place where most players strike hard.

If you are breaking at the bridge, it is likely that you are striking the string with too much force. That's hard to change, but here're a few tips:

Strings break more easily when they are old. Keep new strings on your guitar.

Use a lighter weight pick. I switched to using the nylon picks. They have a little more give - even using the same or heavier guage, they are easier on the strings.

You try to strum with a bit less power, and higher over the sound hole as opposed to closer to the bridge.

Carry plenty of extra G strings!