Part of mustachianism is about the long-term. Longer-term, you can be off on your own and deal with your family from a position of independence and equality. That time will come: be patient, young padawan. In the meantime, it is almost certainly better for you to stay with your parents, because 1) you are 17 and not yet legally an adult: this makes a big difference to the life and financial choices available to you, 2) it can be a big bad world out there and young people who don't have the backing of family have a pretty rough time of it setting up on their own (e.g. looked-after children, who tend not to get support after their 18th birthday, or children who are thrown out by their parents for being gay, tend to have particularly rough life outcomes), and 3) even with your anti-mustachian parents, you are almost certainly financially better off living with them than on your own. Unfortunately, you do not have the choice of having mustachian parents, which would have been the ideal option for you.
I think you need to teach yourself the fine arts of negotiation and compromise. Very few people know how to negotiate effectively. If you can teach yourself this (library books, internet) it will serve you well with your family and in work. Compromise (sometimes just the appearance of it, depending how good your negotiating skills are) is essential to good personal and working relationships: learn about this too.
Truck: does anyone else use this (ie are you paying only for your own gas, or for others too? Who pays for insurance and maintenance? How much as you paying per mile of driving, and how much are your family paying per mile of your driving ($150 a month lease, insurance, maintenance)? Do the sums. Can you drive less, or manage without driving (eg walk, take public transport, buy a bike or scooter?) How much would these alternatives cost you? What is the optimised solution of those available to you? You may find that it is the truck, despite its mileage. The thing to remember here is that you are not yet in a position to optimise vis-a-vis the rest of the world, only for the position you find yourself in. Sometimes good enough is good enough.
Internet: do some research: $190 a month seems high: can you get this cheaper? If you are the only user, can you cut it off/down and manage with publicly available Wi-Fi? If this is your main contribution to household expenses, and you use it a lot, it may not be unreasonable to pay, but there is no reason why you shouldn't look at getting it cheaper.
Extras: if your family wants something, get cash in hand before you buy it. If they ring you up at work for something they need that day, then hand the item over only when you've got the cash. If they haven't got the cash, stick the receipt on the fridge as a reminder. Also, use your newly worked up skills in negotiation and compromise to try to help them plan their shopping better.
You haven't mentioned what your own long-term goals are. If you have worked these out, then work out the financial route to them (eg saving for tuition) and let your parents know. If you haven't worked them out, tell them that you are not yet certain what you want to do, but are working and saving so that you will have the option of getting training/education in something useful without taking on a lot of debt. Perhaps too you could say that one of your interests might be financial management, that you have found savings on eg the household internet payments, and would be interested in looking at other areas where you might help with organising the family budget.
Good luck.