I mean that's one of the reasons keto is so popular. For a lot of people they manage to lose weight while being able to enjoy what they eat while they'd have trouble sticking to better diets. There's obviously draw backs and if they eat only bacon a keto diet isn't going to help them but if they do keto "right" it's an improvement for them.
Giving alternatives to marginally improve might be more useful than a tough love aproach of saying "Since you know the best thing to do, if you don't want to do it that's on you".
In that vein some things that may improve the amount of exercise you do:
Joining social sports club, the focus may be more on wining/improving skills/social aspect than exercise and so may help take focus off the unenjoyable part and a commitment to your group/team/opponent may be more motivating than a commitment to themselves for some people.
Walking/cycling desk setup. An initial outlay in cost but if it's there and you're doing it while concentrating on something else it might be a significant improvement.
Setting an alarm/timer to do a set of weights or squats every hour or so, stops your muscles atrophing if nothing else and will mean when you do purposfully exercise your not immediately discouraged by how sore you are 1 minute into it.
Any everyday routine you can more easily force into your day. Maybe a jog around the block/up and down apartment stairs before your morning shower. Or join the gym that is along your commute rather than the cheaper one that you need to purposefully drive/walk to. Maybe you listen to a chapter of audiobook while doing pallates as soon as you get home. Forming a habit has the highest initial cognitive load, quite often it's easier(not easy) to tie it to the begining of or end of another action you do everyday than it is to do something at a specific time.
Giving alternatives to marginally improve might be more useful than a tough love aproach of saying "Since you know the best thing to do, if you don't want to do it that's on you".
In that vein some things that may improve the amount of exercise you do:
Joining social sports club, the focus may be more on wining/improving skills/social aspect than exercise and so may help take focus off the unenjoyable part and a commitment to your group/team/opponent may be more motivating than a commitment to themselves for some people.
Walking/cycling desk setup. An initial outlay in cost but if it's there and you're doing it while concentrating on something else it might be a significant improvement.
Setting an alarm/timer to do a set of weights or squats every hour or so, stops your muscles atrophing if nothing else and will mean when you do purposfully exercise your not immediately discouraged by how sore you are 1 minute into it.
Any everyday routine you can more easily force into your day. Maybe a jog around the block/up and down apartment stairs before your morning shower. Or join the gym that is along your commute rather than the cheaper one that you need to purposefully drive/walk to. Maybe you listen to a chapter of audiobook while doing pallates as soon as you get home. Forming a habit has the highest initial cognitive load, quite often it's easier(not easy) to tie it to the begining of or end of another action you do everyday than it is to do something at a specific time.
Don't let best be the enemy of better.