drive on the motorway

Passed my test 2 years ago and still not been on the motorway! Sort it out!

I have only been driving a few months now and the furthest i have been is a nearby small town about 10 miles away.
I am not scared of the high speeds of motorways. I am quite happy driving at 70mph on a dual carriageway if i know where i am going.
I have a sat nav which is useful but what scares me is multi lane rounabouts. There are plenty of them in my home town but if i don’t where i am all of them arrows do my head in. Sat navs only tell you what exits to take.
So i suppose it’s not motorways themselves that scare me it is what to do once i get to a strange town and say if i miss an exit and end up somewhere else.

Ever since I took my test I’ve been worrying about driving on the motorway, and I’ve never particularly liked driving in the dark either. Just conquered both fears by driving on the A1 solo at night.