9. Evaluate your strength and think logically before you try to help someone.

In an emergency, you should always consider first what actions might cause you harm, and you should help only when you’re certain that you won’t endanger yourself by doing so. For example, if you touch a person who’s been electrified, then there’s going to be two casualties instead of one. In this case, you need to turn off the current at the source, or use a wooden object to separate the victim from the source of the current.
You need to remember that in any emergency, actions that haven’t been thought through could be even worse than no action at all. Only accept advice if you’re certain it will help. And always call the emergency services straightaway.