There are many ways to make fire starters that can help you make fire when the circumstances are not ideal, for example high humidity, wet branches etc.. They can burn for even 10-15 min depending on their size, which is more than enough to make a fire.
For the first type of fire starters you will need a candle, or a piece of wax and some sawdust. Cut the candle, put it in a can and place it on fire to melt the wax. When the wax is melted add sawdust. Put as much as possible sawdust to be able to make pieces as in the first photo. Use The wick of a candle to lit the fire starter easily. "Bake" the thing you made around the wick and you are ready to use your fire starter.