I learned my tech skills doing desktop support, not server administration. On the desktop side, the tried-and-true mantra is, “Turn it off and turn it on again.” Or, to put it another way, we do everything through trial and error. We think of a possible solution, we throw it at the wall, and we see if it sticks.
Over time, we gain enough experience that we can become better at guessing the solution the first time. This makes us look like we are wizards, because we appear to have very little information about the problem in front of us, and yet we will know exactly what to do. But none of us start out that way.