If you've got a dream, don't be afraid of failure. Instead, try as hard as you can, and you too can travel through time, write a hit novel, or even take over Hill Valley with the help of the sports almanac that was given to you by your future self. Okay, maybe not that last one.
Most flyers are incredibly annoying, but you never know when one of them will provide the vital information needed to get you back to your own time. So it's better to hoard all your flyers for as long as possible, just to be on the safe side.
You may think that technology has moved well beyond fax machines, and yet your office probably still has one. Nobody knows why, they just do. Kind of like how nobody knows why you can never remember if you have to dial "9" first.
If you're dealing with a broken heart because you had to tell your 1885 girlfriend that you're actually a time traveller from the future and she doesn't believe you, you might partake in an alcoholic beverage. But if you're someone who blacks out after one drink, you might need to find another way to cope.
If a hooligan acquaintance named Needles challenges you to a car race, just say no. And if, 30 years later, that hooligan has inexplicably become a businessman and he tries to coerce you into a shady transaction, also just say no. However, if someone named Flea ever asks you to do something, just agree to it.
8. Don't Let Society Tell You Who to Be Friends With
Why are Marty and Doc friends? Nobody actually knows. One's a hip high school guitarist and skateboarder, and one's an old, seemingly insane scientist. But they don't let the weirdness of their friendship get in the way of how they feel about each other.
Your may think your parents have a fairly firm grasp of right from wrong, but they were once dumb kids who had no idea what they were doing. When they were growing up, your parents made mistakes, just like you. Perhaps one of them was even a Peeping Tom. Although we certainly hope not.
If someone has too much power, especially if they're a former school bully who's in possession of a seemingly magical sports almanac, that power is going to be abused. And, even worse, it also makes that person strangely resemble Donald Trump.
And you can't get a Pepsi Free, because if you want a Pepsi, you have to pay for it. And, we assume, you also can't order a Coke Zero, because why would anyone want to pay money for the absence of Coke?