Yes. That is right. Visualise the sky as a dark room. Your room. The torch is on the mantlepiece but somebody put a new table in there so you will have to alter course to get to it. You will, without difficulty because you know where you are and where you intend to end up. Flying is much the same. A process of continuous approximation that gets more exact with practice.
Get within ten degrees and you are going in about the right direction.
Calculate your route to fourteen decimal places and by the time you have worked it out, you'll be lost.
Navigation is easy if you follow one golden rule. It sounds like a wind-up but if you pay attention, it becomes second nature very quickly:
Always know where you are.