I have to remind myself of my goals on training rides. If it's switching between sitting and standing to climb and maintain a steady speed on hills -- like Thursday -- I have to remind myself to ignore that sweet tailwind and not go for new Strava PRs at every opportunity (already did that this week anyway). If it's FTP, keep it steady and resist the temptation to max out on sprints and climbs. If it's chasing Strava segments, ease back and save some between segments.
And at 60, I'm not doing interval training more than once a week now. Overdid it last summer and while I saw improvements for awhile it caught up with me and I went into burnout for a few months and had a hard time recovering. I also wasn't watching my diet carefully and was in calorie and protein deficit. To some extent I was lucky to get sick with flu in January and was forced to rest and ride only casually a couple of times a week.
I'm also walking more to stretch the legs and give the other stuff a chance to rest. I hardly ever actually feel like working out so most days I just get on the bike, warm up gradually for 15-30 minutes and then decide whether it's a workout ride or just loafing and enjoying the ride.