I used to work as a Public Safety Park Ranger. It's okay to carry a BIC lighter, but in addition you should have a fire starter stick in your bag as well (BIC lighters are relatively easy to break):
https://tinyurl.com/wsypawm Also, before setting out on a hike, file a plan with the park rangers (ideally, stop in the ranger station and ask for advice on the trail conditions, etc before heading out as well - rangers monitor absolutely everything in order to keep you safe; from short and long-range weather forecasts that we developed ourselves, to wildlife concerns/sightings (so, if you're a birder etc we'd log the location of sightings of rare/unusual birds), areas with sketchy cell service or without it completely, potential hazards, i.e., fires, loose rocks, flooded lakes/streams, ice thickness (yes, we'd measure it daily at a minimum - more often if the weather was changing), hunting activity during the season, etc. I'd advise bringing a handheld GPS with an extra battery or two that are fully-charged; in this respect, you should learn how to use a compass and a map so that it's 2nd-nature to you: Many rangers offer classes in this regard. Being able to navigate by using only primitive methods is useful too - as is the skill to track, and being able to effectively ID edible/medicinal plants (I spend all my holidays with my former ranger dispatcher and her family - her husband is a retired ranger, and her mother is an expert in plants and teaches said classes; so we always have dishes like wild mushroom, various plant-based drinks, fiddle-heads, wild asparagus, various roasted nuts collected in the woods, wild berry pies, paw paw, etc). Since I worked mainly nights, I was required to carry at least 2 sources of light: One was a Streamlight (full-size), and the other was a small (pocket-sized) LED light. In addition, I had a very, very bright LED headlamp that attached to my cap. Hope that helps! Hike safely, guys - and remember, the main job of park rangers is to keep you safe - so talk to them, get advice, etc!