As with anything, people get into trouble when they fixate on goals rather than the process.
If your objective is simply to become a better mountaineer rather than tick off a list of summits, that'll naturally lead you in a sensible direction. You'll get the right training, you'll work on your skills and fitness, you'll look for routes that offer the greatest technical challenge at the lowest risk. The inverse attitude is what gets most people into trouble on Everest - they push far beyond the limit of their abilities, they ignore clear warning signs that their body is failing, all because they're preoccupied with the summit.
If your objective is simply to become a better mountaineer rather than tick off a list of summits, that'll naturally lead you in a sensible direction. You'll get the right training, you'll work on your skills and fitness, you'll look for routes that offer the greatest technical challenge at the lowest risk. The inverse attitude is what gets most people into trouble on Everest - they push far beyond the limit of their abilities, they ignore clear warning signs that their body is failing, all because they're preoccupied with the summit.