By not being as paranoid as I am as a player.
Actually, this has applied to almost every campaign I'm in. I tend to make savvy, defensive-minded PCs with a streak of (usually justified) paranoia. These PCs tend to survive because they watch their backs, take save-upping items over uber-1337 death sw0rds of d00mz0rz, and stick close to other characters who compliment their strengths.
No one else ever takes this example to heart. I couldn't tell you the number of PCs I've seen die from situations that should have been
painfully obvious both to the players and to the (allegedly Int 15, Wis 15) characters. I'm talking telescoped a mile away because the DM intended for the party to understand the danger.
Nope.
With that said, nothing kills PCs like overstepping their bounds. Just last session I had one who had just seen a (
much more powerful in combat) ally get smacked down right next to him, had been himself grappled and mauled by
one of the four opponents ringing him, who had been given the option to surrender
twice, who could have dimension doored away... pick up his swords while prone and attack four boss enemies.
