-Save save save. Young people have no idea what it means to actually save money. It's not about having an extra $500 in savings, it's about putting an extra $1,000 in savings every single month. It may sound like too much, but adjusting your spending habits will help accumulate your money.
-Do not go into debt for any reason whatsoever. Having a good credit score will be useful for paying off your mortgage and car insurance. If you went to a shit-stain university and are in $200,000 in debt for a liberal arts degree, then give up on life, work at a hipster cafe, and move to Austin, TX.
-Cut out facets of your life that are both expensive and bad for your health. Fast food, smoking, and overdrinking are major money sinks. If you don't have the self control to lower your consumption of such activities, then you will not live in luxury. (unless you're Amberlynn Reid and consider eating to be life's greatest luxury)
-You can try attracting someone who is rich and vicariously live through their success. Do whatever it takes to get a rich person to want to fuck you. This may take work if you're ugly or socially inept.
-Take a risk. Whether it be starting a business, gambling at the casino, or pulling an Elliot Rodger with the lottery, you can try testing your luck to see if you can get rich.