I tried to bring up the idea of taking a semester off of school to my dad

He's saying "It's your education, your career, your life" with that undertone of "I don't want you to do this" and he doesn't get my reasons at all.. Or at least he doesn't think they're good ones. But what it really boils down to is that right now I'm at a mental state where I don't have any motivation for school. At least at work I feel like I might be going somewhere and school just feels like I'm going towards failure. I need a break from something and it's not like I can just stop working.