Get-rich-quick schemes and fad weight-loss diets are naturally popular because they satisfy the id while also attending to the super-ego. The ego's job is complete when it sees something like this. The appeal of "fast'' stems from the innate desire for instant gratification, so beware of what seems too good to be true (they often are) when you're looking to make money quickly. Be wary. Listen to the conversation deep within the confines of your mind and do your best to tame the proverbial beasts.
The folly of youth is believing that there's always enough time for everything. Youngsters often believe that retirement, or wealth building, is something that comes later in life, and are more preoccupied with the concerns of the now. Unfortunately, this often leads to a cycle of "Oh, I should do that next month," month after month, until before you know it, you're 10 years older and you've missed out on a decade's worth of compounding interest. The first step is to stop procrastinating; saving and investing is scary, but the longer you wait to do it, the fewer advantages you have.