When does driving stop being scary?

I've done 16 hours with an instructor and about half an hour with my dad in my car so far (to and from work yesterday, about 15 mins drive each way down a busy dual carriageway, will be doing the same today)

I'm mostly fine with my instructor now, still anxious but I'm a lot more relaxed than I was. But with my dad I'm so anxious and am scared to even blink incase I miss something 😅 it's probably just because I know we don't have dual controls so everything is on me to avoid crashing. When does it get easier? My dad keeps saying "just relax" while I'm driving but honestly that just makes me more tense đŸ¤Ļ‍♀ī¸

On the plus side I managed to go up to 56mph without having a panic attack which is the fastest I've gone so far 😅 in fairness, this dual carriageway is difficult because there's loads of roundabouts and crossroads and traffic lights. (The A449 towards Stafford from near the i54 for anyone familiar with the area). And the speed limit changes a lot. In that 15 mins drive it goes like; 30, 40, 60, 50, 70, 60, 40, 30 🙄