I know what you mean. Ketosis does give us a  break from at least some of the stress. But I'm not sure it's  sustainable for me. When I came off LL I was terrified of regaining, and  terrified of carbs. And I maintained by being vigilant about my low  carb plan. But I lost my way a bit. I wasn't eating enough fat to be  fully satisfied with low carb (the low fat propaganda is everywhere and  difficult to ignore) so bit by bit I weakened when faced with carbs...  And here I am. 
Except what I'm doing now is subtly different. I am trying really hard  to stay in the moment and really feel what I'm feeling and stay with it,  however much I don't want to. There has to be another way. It's very  possible that a low carb high fat plan will end up being the optimum for  me but I want to be calm around carbs, kind of neutral. And I think the  only way to achieve that is by saying no food is off limits. The only  thing to consider is will it make me feel better or worse? Now? In five  hours' time?
Being honest about that is the difficult bit to learn. Because of course  the carbs will make me happy. Now. In the moment of eating them. And  sometimes that is ok. Cake is fun! (Lol). And biscuits and crisps and  toast with butter. But sometimes being slim and feeling energetic is  more fun...
I've been using packs as a quick fix. If I'm honest, I wanted a way to  be able to binge on 'forbidden' foods and not face the consequences (not  that I ever consciously realised this). Kind of telling myself 'i can  binge but it will be ok as I can just go back on packs'.
Except it isn't. Because each time gets harder. As lots of people on  here will agree. The bingeing started after lighter life. I'd always  'used' food inappropriately, but was good at identifying what I wanted  to eat and making nourishing and genuine choices. But I ate too much as I  never knew when i was full. And because I was using food, sometimes it  was never going to satisfy me because what I was feeling wasn't hunger. 
The massive carb binges came from denying myself, restricting myself, and telling myself I was a failure to have regained. 
I'm stopping that and it feels lovely! I'm not a 'failure'. I've  achieved a massive thing for me. I'm still loads lighter than I was, and  more importantly, I am far closer to finding equilibrium than ever  before. 
It's not easy but it's worth it. In the words of the immortal ads, I've realised that actually I am worth it, too!!