This is the first time since I've been riding (9 years) that I haven't felt burned out at this time in the season. The reason is that I made a conscious effort to make cycling less stressful by not always making goals of faster, longer, harder and instead, using cycling as part of a total lifestyle. It has really worked; once I forgot about my average, it went up. I ride with 2 friends who are much slower than me. While I often go ahead of them, it keeps me from overdoing it, which I am prone to. Then, when I ride alone or with my DH, I am fresh and can push myself. At this time of year, I ride to farm markets a couple of times a week and I ride to appointments. When I was working, I commuted twice a week, with no expectation of speed.
I've always done other sports/gym things which keep me in reasonable shape for cycling. That doesn't mean I don't have to work at building up my endurance in March, when the season starts, but it helps.
So, go with the idea of having fun and no expectations except that you go out and ride.