I can change my own oil. I can put air in my tires. I can change my windshield wipers. I can fill my power steering fluid, windshield wiper fluid, antifreeze and oil. I can replace my bulbs and fuses. I can change my own tires. I sometimes need a little help because I'm not strong enough to get the lug nuts off. I can even apply Bondo and sand it down nice and smooth to get the body ready for painting.
But other things elude me. Like, what is that knocking in my front end?