We. Get. Stressed.
So what if there's an accident on the way to school and it's slowing down traffic, making me late for class? That's an extenuating circumstance. If I gave myself sufficient time to get to school, and something like that makes me late, that's not my fault. So in the middle of the backed-up traffic, I don't need to panic.
So what if a customer issue comes up at work and I don't have time to finish the cleaning project my manager gave me? A more important issue came up, so the project will have to wait for another time. And that's okay. I don't need to feel guilty about it.
So what if you have to go to school or work or any other number of obligations? Yes, it limits your free time, but you'll just have to accept it and work around it. Don't put needless pressure on yourself to accomplish more than you have time for.
When you brush all of that aside, your mind is suddenly a lot freer to start focusing on what you can do, and what you do have control over. It's a lot less stressful. A lot more freeing.
So relax, friend. Life may be full of stressors right now, but it doesn't mean you need to be stressed. Shift your focus, release what you can't control, and just figure out what the next step is. That's all.