I’ve been retired four years now and don’t regret a moment of it. In a strange way, the huge changes in road transport have helped me not to yearn: I wouldn’t want to be driving today’s lorries on today’s roads. That simply leaves me happy memories of sailing down the old ‘nationals’ in the kind of lorries I enjoyed driving 20 or 30 years ago and with the kind of camaraderie we had among drivers of the day (ie sitting round a carafe or two of wine in a routier instead of sitting in the cab with an I-phone!). And this is where this forum comes in handy 
. I wish the OP a happy and fulfilling retirement!
Cheers, Robert 