This is a bit of a false dichotomy by leftists to try and divide people. Most wealthy people are not like in the related pic, and most poor people aren't either.
If you want to (eventually) become wealthy, there are two things you need to do:
1) save money (at least 10% of every paycheck)
2) Invest money (at least 25% of yearly take-home pay)
This is actually how the majority of "rich" people become so in the USA (I am defining "rich" as people who have at least $1-million in total assets).
It won't be easy. You'll have to sacrifice a lot to make it happen. You'll likely be old and decrepit before it happens. Learning about Bayesian Decision Making can actually help a lot, if you can handle the maths.
As far as investing, look for products or businesses that you and your friends personally enjoy and try and figure how WHY you like them. Look for similar products or businesses.
If you want to go stock market (this is easy to start investing immediately, has less work, but is more volatile over the short term than buying into businesses), go for a mutual fund that has a long track record of modest gains. Don't do investing yourself or day trading. That is a recipe for disaster. I recommend FunShares (they invest in things people think they need, but really don't; cigarettes, toilet paper, gambling, q-tips, alcohol, etc).
When looking at businesses to purchase/invest in, don't go into restaurants. They can be high profit, but they're very, very risky and tend to crash and burn quickly.
To get initial seed investment money in business, you will probably need to get a group of friends to also save and invest together. This can be straining on a friendship, so be sure to budget for a good lawyer to make the initial investment contracts.
Be aware that you're going to fuck up occasionally and lose money. It happens. It'll be painful (especially at the beginning), but analyze and learn from the mistakes and resolve to not let it happen again.