Everyone including me goes on about firesteels and primitive methods of starting fire, however, it has to be said that taking a simple Bic lighter AS WELL, just makes common sense.
Lighters have limitations, they won’t work when wet or very cold, they run out of fuel and they are easily broken. That said, in many situations they do work and make starting a fire simple.
This video shows you a few simple things you can do to improve a Bic lighter for survival use. It is well worth watching and it will only take you 2-3 minutes to pimp out your lighter. The tip about using duct-tape to help starting a fire alone, makes this video worth watching.