Everything in gardening is cyclical and comes round and round and round again. To make it easier we need to take each job in turn, and promptly so. First we can group the tasks into those that need doing really frequently, those that need doing fairly regularly, and those seasonal ones that come round once or so each year.
arrange tasks according to personal priorities
Then within each group we can put these tasks into some sort of order of urgency. Obviously watering dried out plants in pots really needs to be done before cleaning the gutters or writing a seed order. I arrange tasks according to my personal priorities, of course your’s may be different but probably most will fall in much the same order.