We have both worked relatively hard throughout our working lives. I also count staying at home to bring up our son in that statement. Now we are both no longer working, our ethic appears to have not changed much!
Everyone is different. Indeed people tell us how nice our house and garden are, how we are always busy and keep ourselves occupied. More so in summer than winter I might add and sometimes, I can 'get bored' if I find too many hours to fill, especially in winter.
Yesterday and the day before, as part of reducing and getting on top of the garden, I emptied our shut down compost bin onto tarpulin to allow it to dry enough to sieve out the big debris. DB came and helped me tip the full compost bin into the now empty one. Every few inches, we put in a layer of scrunched up newspaper to help keep it aerated.
It was hard work on such a hot day (30C) but we did it in phases. By the end of those two days, the job is finished, compost has been put where needed on the garden, the tarpulin put away and the garden tidied up further.
We know people in retirement whose partners have gone back to work as they just can't abide sitting around. Other who seem to pootle but get nothing much done, others who appear to do nothing at all but lament the state of their affairs..
We are all different and you have to be true to yourself and your core values. I think if you haven't changed how you operate before retirement, you probably won't alter in retirement. However, never say never!