Gardening:How to keep it under control?

I love gardening! Over the years I have developed several garden beds, 10 or so. Our yard is now at the point where there is very little grass left to mow!

This spring as the garden is consuming my time, I'm thinking that I will not be able to keep up with this forever . I'm 61 years old and in good health, to SPeople! However, I'd like to have time to actually sit in my garden and enjoy it, rather than just maintain it.

We are having a new driveway put in tomorrow and so I need to go out now (and it's awful weather here today, Temp almost at freezing and snow on the way) and move all the plants on the edge.. that should be good for calorie consumption !!

We have a saying in Canada, which is proving true, March arrives in like a lamb but April goes out like a lion, or something to that effect. Do you have a similar saying given where you are, are you into gardening and what do you do about changing your garden to one that requires less maintenance? Any and all ideas are welcome!!
jan