At 4 hours I was pretty convinced I'd never be able to take off on my own and handle changing radio to Farnorough let alone getting routing and a basic service.
What hold 75 knots in the climb, tell Fairoaks you are changing station, talk to Farnborough, request a basic service, write down what they are saying and punch some random numbers into the transponder whilst setting QNH? Err, I don't think I'll ever be able to do that.
You get there in the end and what a feeling of achievement when you get that license!
Personally it only took about an hour to learn to fly. It just took around 20 hours of lessons to get to that hour where things started to make some sort of sense.