Congratulations on living and learning a valuable lesson. One I've been preaching a long time now. And now it's your turn to lend a hand educating others. All the new, bows, best sights, best broadheads, carbon arrows, and most comfortable treestand, etc, etc doesn't mean a dmaned thing to a dead man hanging upside down in a tree or laying dead on the ground.
Full body harness goes on and used the whole way up and the whole way down.