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Nothing you have said about yourself indicates you are likely to become rich. Employers in part see school as a test if your ability to complete assigned tasks, and even if you forget what you learned, a degree shows you do have the ability to learn that the job may call for.
Maybe you have ADD or something that makes learning harder in your current school system and you might do better in community college where you have a bit more independence.
There are some handsomely paying jobs that require just a 2 year degree (on top of high school diploma)
http://jobs.aol.com/articles/2013/12/30/...
What would make you succeed in business where your uncle is failing, it takes more than a work ethic. Most people who do well in business build their wealth gradually and need deed money, like from a regular job to get started.
everything at school is relevant to pursuing a goal like that - without college or trade school, you have very little chance of ever becoming rich
Attorney and sue every business in this country.
you got me pal and i'm a business owner of 45 yrs.
Get your grades in order. If you cannot do that, then you may never succeed.
join the army.