When I was a kid, my favorite kind of book was the type like Hatchet, or like Robinson Crusoe, where people would be trapped in the wild and would have to survive with their guts and intelligence.
So, when I was a kid I always thought hiking would be like that, and that I would never have to worry about survival because I could just improvise if something went wrong.
But we recently heard about a man I thought of as an expert hiker, who got caught out by very bad weather and froze to death. It can happen to anyone. So, my best tip is to be as prepared as you can, and as cautious as you should be. Have fun, but remember it isn't a game, and at any time something can go wrong and threaten your life.