Indeed, and to be honest, the steady decline beyond certain point also puts a huge strain on the loved ones too.
By the time Elite's update is released, I will be 40, so I will turn my tape to the 'B' side too. Fortunately I have no health issues yet, but I could cut down on alcohol (not excessive amount, but regular consumption) and also could eat better + do more workout, the latter is very difficult with three kids at home though.
Try little bits of exercise, often. I think what gets in peoples way is the tendency to allot a set amount of time, say an hour a day, to exercise. That hour quickly gets in the way of other things with more short-term benefit (such as cleaning, cooking, decluttering, dealing with kids/pets/...). Instead have a repertoire of exercises you want to do (stretches, core exercises, aerobic training), and do bits and pieces of them during the day. A 5 minute break can be used for stretching and hip/abs exercises for example. A lunch-break can be divided into an aerobic session and a meal.
Also choose what exercises to do based on time available. Walking and cycling are great for burning calouries, but they take a long time to have effect: Walk-jogging, how humans most likely originally travelled and hunted, is very energy-efficient and we are built to do so for a very long time. Outright running or continuous jogging are very energy inefficient, as in you burn a lot fast; 20 minutes of jogging is about similar to 2 hours of walking. So if you have time for the walk, that's probably fine. But if you can jog, you need to spend less time exercising for the same benefit, and you have the added effect of impacts on your joints and spine which will keep them healthy (if done right, of course). Swimming is another good one for getting exercise benefits fast, and there are no impacts involved if that's detrimental. However, it's a lot easier to pop on a pair of sneakers and go for a jog compared to finding the time and will to go to a pool. Unless you have the sea or a lake/river handy.
Changing diet is helpful too, but again something that shouldn't be gone overboard with. Just rebalancing meat vs veges is a good start, and ensuring to eat varied. The only point to cutting alcohol is if drinking is to excess, and remember that worrying about it is also problematic! You want to enjoy that drink or two, not feel bad about it or the damage is doubled. Main issue is the amount of calouries added by drinking. Beer adds a lot, wine slightly less, hard liquor even less.
And stop worrying about turning 40. My life didn't start until I was 42 I reckon. I thought I was done for at 40, but what I have done since then I never thought I would be able to, even in my 20s. I think 60 is the new 40. Or maybe 70?
S