Always wear a helmet and any other appropriate safety equipment for the riding conditions.
There is no shame in walking sections of the trail you don’t feel confident enough to ride, and don’t let anybody tell you otherwise.
Some bikes are better for different situations. Just because you can see tire tracks, doesn’t mean you can ride it with your bike.
Always keep your speed at a level that will allow you to adjust to any unforeseen obstacles or changes in trail conditions.
Never push the limits on a trail you are not familiar with. You need to get to know the trail you are riding at slower speeds before you can ride it like the trails you’re used to.
You never know what or who is around a corner when you can’t see past it.
Stop and look at sections of the trail that look like they may pose a challenge before you ride them.
Always look at the consequences of crashing in a particular section or on a particular stunt before trying to ride through it. Sometimes a section can look easy to ride but can have deadly consequences to a crash.
Work your way up to obstacles and stunts. Find ways to practice moves in less difficult and dangerous situations or at lower speeds before committing yourself to something more dangerous.
If you think what you are doing is not the smartest, you are probably right. Think about what you are doing and trust your instincts.