Classic DARVO, deny (and / or deflect) attack, Reverse Victim and Offender
I think it's quite normal to compare your life to your x's life when the split is fairly recent, and yours is imo, anything really painful takes about five years to completely recover from, heal from.
I used to feel like you do. I was stuck looking after two toddlers, broke and shamed (I felt). I was a broke single mother and he was a wealthy home owner who could just start again, and he did..
But over time, I have un-enmeshed from my x, so what he has - and what I have are no longer entered in to the same competition (in my head). I see him as being on a very different path to me.
Measures of his success are external stuff, external measures. It's appearances, it's superficiality. I'm really driving the point home there.
I didn't get that over night though. I felt the pain of comparison badly at first.
Over time I have moved in to assessing my life in a more internal way. I'm more content than he is, I'm sure of it but it's not a competition . I take accountability for my mistakes. I've learned from them. I have goals I've reached, goals I'm still working on. I'm looking forward to the rest of my life. So life now is ''How i feel about my life'' not ''How my life looks to other people''. It's not an overnight shift. Do you know what I mean?
I admit that as time went by I have 'more', in a conventional sense, a secure job, a place to live but also the things that people can't see, a good relationship with my kids, friends, health, interests, optimism, sanity? clarity? and wisdom!
Not sure my x has any of that, maybe, but that's his story and over time there is less and less reason to compare my story to his.
Peace will come. Start thinking about your life. What small thing can you do each day to take you to where you want to go? Even if it was only saving a fiver or reading a book about self-efficacy or getting exercise. Make a list of the things you love doing. Cross out the ones he has the power to prevent you from doing. I bet the list is almost as long as your first list.
So long as you don't do anything that takes you off your path, I think peace will come.
xx