Wow. This if anything will screw you up. 12 hours of work + 8 hours of sleep per day 7 days a week leaves you with 4 hours for commuting, showering, making dinner, doing laundry, working out and relaxing.
Doing eighty hours per week can be wonderfully efficient - for a few weeks. After that you start to get sloppy, and soon you're performing worse than those doing a 40 hour week. Work a not a sprint, and not even a marathon, and more like running around the globe because you like to run.
Work shouldn't even be means to an end of becoming rich, and being rich without a respected job you're proud of is boring and hollow. Unlike prestige, once your income or wealth exceeds the limit where you have to stress about money, having more money won't make your life happier.