Well done for asking for help rather than risking blundering into controlled airspace. I'm an 'old timer' but I agree - GPS is wonderful!
Many decades ago I flew to a distant fly in on a day like you describe, except probably worse. I could not see more than about 1/2 mile horizontally, but the view straight down was fine. so I followed a railway line. It was some 20 minutes later, when things didn't 'add up', that I realised we were following the wrong railway line!
No harm done on that occasion, but if GPS had been around back then it wouldn't have happened! But I did learn from it - I never did that again!