Do you do any walking, in the countryside? Sometimes off the footpath or to the side of it? If so, you can be preparing for next season right now, in the height of summer.
Every time you are out walking, deliberately seek out some down-slopes on grassy terrain. They don't have to be long, and they don't have to be massively steep; all we're trying to do is get used to the feelings.
As you walk down the slope, deliberately get your weight onto your toes or the balls of your feet - no further back at all! FEEL yourself being held back from sliding down the slope by the pressure against these front parts of your feet. Concentrate on that feeling. Every time your concentration lapses (and it will), use that lapse as your cue to bring it back to your toes.
When you succeed in this little game, and you can feel yourself being supported by your toes or balls of your feet, you will be able to notice something else: you cannot do it while leaning back. And you cannot do it with your legs straight. It will feel horribly unstable and risky.
So now I'm going to suggest you find another bit of slope, or some more of the same one, and GRADUALLY, VERY GRADUALLY, make an attempt to lean slightly backward as you walk down, and let the pressure under the soles of your feet move rearward towards your heels.
I want you to investigate how this FEELS. Does it feel more, or less safe than its predecessor? Please write to me if it feels safer - if it does, you are phenomenon!
Go back to having the pressure forward under your foot. Do you notice that you INSTINCTIVELY flex your legs?
You will find that you can keep your body fairly upright (you don't have to lean forward, although sometimes it helps). You might imagine a straight vertical line going down through your body and continuing into the ground. I'll bet it passes through the forward pressure point you can feel under your feet.
Each time you go out, play this game, and make sure you include some of the leaning back occasions too so that you can calibrate your feelings.
If anyone would like to comment on this when you've tried it, I'd love to see them, and they might help other folk too - you'll find the link to click to enable you to do this at the end of this article.
Let us know how you get on.