Put more effort into learning how to get along with people. You'll learn in a couple of years, why not now.
In the spring of 1972, no matter what your father says, send in your application for financial aid for college. Just do it. You will be most grateful. Matter of fact, you'll do well to disregard anything your father and mother say. They are not looking out for your best interests.
Start getting in shape now. Do pushups every day until you can do at least fifty without stopping. This will be a big help during basic training in 1974.
Not to worry, you'll have what it takes to do anything you need to do, and will do very well in college and further schooling. You can step up your game easily. Just get through high school; once graduated, you'll see very few of these people again.
When someone offers you a job that seems like a stretch, take it. They'll work out very well. If you couldn't do it you wouldn't have gotten the offer.