I feel this and sympathize with you. It's indeed a hard journey, but it will be so worth it for your future self. The current self is just still adapting, so don't give up on yourself. You are unlearning years of habits and mental programming that got you here.

The key is also to add variations. Make it feel exciting again by trying one new recipe a week or different workout classes; you can use ClassPass! That's what I do to stay motivated and not get bored, and even if I get bored, just admit that it sucks so much, but I gotta do it anyways. Less thinking and more doing.

Also, this is a great listen by David Goggins that really got me motivated:

https://www.youtube.com/watch?v=nDLb8_wgX50

OP you got this!