My dad is the most disciplined person that I know. He got his math PhD in 2.5 years. He said that when he was in grad school, he'd wake up every morning at 4a

My dad is the most disciplined person that I know. He got his math PhD in 2.5 years. He said that when he was in grad school, he'd wake up every morning at 4am, work without interruption until 8am, take a 1 hr nap until 9am, work until 5pm, stop work, and then sleep at 9pm. He kept a strict diet of only eating green veggies and never eating meat (plus, he couldn't afford meat). I've never had any discipline. In college, I decided I'd finally get some discipline and I would do exactly what my dad did. I woke up at 4am every morning, took a 1hr nap at 9am, worked until 5pm, went to bed at 9pm. I wanted to be just like my hero. In short, it was a total disaster. I was tired constantly. I slept in class all the time. I performed decently in school, but I remember it as a pretty unpleasant time. It was a pattern that was very hard to get to work inside of a college dorm where I also had a roommate sleeping in the same room. I found myself always thinking, "What would dad do?" Not, "What's right for me?" I beat myself up a lot when I couldn't live up to the kind of man my dad is. I gave up on the idea of discipline, and it's been great for me. When I reflect on when I'm happy or unfulfilled with work, I don't think of it in terms of words like "motivation", "discipline", "inspiration", etc., because those words just express patterns and modes of approaching work that work/don't work for other people. I think, "Why am I tired?" "Why would I rather watch TV than work on my company?" "What are the short-term / long-term tradeoffs?" etc