How often do you check your bike before riding? Expanding on what @wader71 said, making a quick check part of your routine can stop small issues from turning into commute killers. I learned that looking at tires, brakes, and chain takes just a minute but saves a lot of hassle. It turns a chore into a habit that keeps you rolling without surprises.
That "quick check part of your routine" line is so true. I was bad for just jumping on and going until I got a slow leak halfway to work. Now I do that same minute-long look at tires and brakes, and it really does become automatic. It saves you from those stupid, preventable headaches.
Yeah, it's one of those things you only learn after a dumb mistake. I once rode a whole block with my disc brake rubbing because I was in a hurry and didn't look. Sounded like an angry insect and totally killed my speed. Now that quick glance is just part of grabbing my helmet.