check your gear list once more and check your packed gear twice.
There is an old methodology from the 1960s, used by the military, and sneaks into business corporate world every ten years. it's a SWOT analysis.
SWOT: Strengths, Weaknesses, Opportunities, Threats.
Basically, identify what you are really good at, then figure out what could go wrong. Then find a way to leverage your strengths and opportunities to overcome and mitigate the Weaknesses and Threats.
Strengths: You have strong legs, take a kickboxing class at the gym, you are a strong hiker.
Opportunity: People Pepper Spray is on sale. You buy a can.
Weakness: You are too trusting of strangers, and a poor judge of bad weather.
Threats: A stranger can attack you, lightning can strike, and you get washed away in a flash flood.
if a stranger attacks you, you can kick and pepper spray
leverage your knowledge of the trail to plan your escape route
Opportunity to study the weather forecast
adjust your gear accordingly.
setup a trip wire alarm with tooth floss string and a bell on your camp perimeter.
Last month someone else posted a similar question about first time solo trail confidence: