how long before you considered yourself a good driver?

Background: Im 37 m and a new driver, nagdriving school narin for two days. 8 hours in total. And drove the family car a few times in the city and highway. Ive watched a lot of how to videos on how to park, drive and do maneuvering sa mga eskinita. But I feel na hindi ako nagiimprove. I still make the same errors like pagtantya ng sides sa reverse parking, or tamang pagliko. So I just want to know how many hours ang drinive nyo before thinking na Im an adequate enough driver. Thanks just want to boost my self confidence sana or maybe not.

edit: cant reply to each of you but thanks so much guys, for the pieces of advice and anecdotes youve shared