Stick with it squarewheels – loads of good advice here. I've always ridden a wee bit offensively on the road, tis in my nature 😉 Look like you own it, no kerb hugging, position yourself like a car at junctions, look drivers in the eye, including making them aware that you know they are behind you/ passing etc. Oh and thank people who give you space, wait to pass etc – we have to do something to build the rep of cyclists on the road. I commute – when I can be bothered, so 2-3 times a week at the most, across a bit of Wilts, and like others avoid the A road and use the back lanes – and the lovely kennet and avon canal to keep off the worst bits. Some training to build confidence may defo be worth it, and think of all the benefits that cycling even this short journey gives you. I often struggle with not being arsed to ride to work, but can guarantee I feel better for having done so.