Absolutely this. When I was building up a soldering habit (have a backlog of analog synth modules to make) I made a point of soldering 1 component. But then by

Absolutely this. When I was building up a soldering habit (have a backlog of analog synth modules to make) I made a point of soldering 1 component. But then by the time the iron heated up, I've decided what goes into the board next, and soldered that one component, I might as well do 5 or 10.