Don't smoke, don't drink, do exercises regularly, try to keep learning and challenge your brain. Find one or more hobbies that relax you and good, honest friends who like you for who you are.
https://thelancet.com/action/showPdf?pii=S0140-6736%2818%293...
The three leading causes of attributable deaths in this age group were
tuberculosis (1-4% [95% UI 1-0–1-7] of total deaths),
road injuries (1-2% [0-7–1-9]),
and self-harm (1-1% [0-6–1-5]).
As always people are projecting their own behaviour on others. You have more chance to die in a traffic accident as a pedestrian, just because modern cars are ridiculously safe. I've in an accident, I was in the car on passenger seat. If I was not in the car - I would post here, because at that collision speed pedestrians doesn't survive.
It absolutely doesn't matter if I drunk that day or not. Or just was on my way to drink a lot.