"You can never truly be 100% prepared for anything in advance because situations can and do change in unexpected ways. There’s always room for error. There’s always room for the unexpected. However, training and preparation are still essential. Don’t sleep on learning survival skills or coming up with a plan of action in case of an emergency.
That’s one of the reasons why you periodically have fire drills at school and work: you need to put your theoretical knowledge to the test. You need your body to know what to do. Of course, things will probably never play out like you imagine them to when there’s a real emergency, but it’s good to build up some muscle memory
One half of someone’s survival habits is having a sharp mind and knowing exactly what to do and how you can tell if you’re in real danger. For example, knowing not to turn on the lights if you smell gas."