@HAH you mentioned on another thread that you had some anxieties when out with Kipper - just thought I wold share something that happened with me a few years back, may or may not be similar to waht you're going through.
When Monty was 18 months ish, I would get really stressed when I was out alone with him off lead. I had images of him racing towards other dogs, getting lost, getting bitten, knocking someone over. Some were misplaced - he's not a 'running away dog', but he is a 'running toward another dog' dog.
So, I decided to just walk him on lead. No great hardship, as he got 2 - 3 small off lead group dog walks a week with his dog walker, and OH at weekends had no issue at all with having him off lead. So for the 2 times each week I was doing his 'main' walk, I stuck to pavement walks - a bit boring, but I was way less stressed.
Then, I'd start to go into the fields and say to myself, I'll just let him off for 5 minutes when there's definitely no-one else around. Or clip him on lead when we went round a corner, through a hedge, any blind spot. Quite soon my confidence grew and within 4-6 months my anxiety had gone.
Now, I'm not saying that was a good strategy for improving Monty's recall, perhaps even the opposite - but I felt more in control and didn't dread walks on my own. Now, I never really fancy an on-lead walk!
So, whatever works for you, don't beat yourself up - sounds like you have a supportive OH - mine was just like ' he's a good dog, don't worry' - which is true, but didn't really help me feel less stressed.