How do you cope and move on after losing an older spouse when you’re much younger?

I am asking because I used to think that when he dies I'll be able to move on eventually but I don't think it is gonna be that easy for me. Especially because I am hoping to get a lot more time with him but with his health/age it isn't looking to good. I mean if I knew some of the things he does I would NOT do those or EAT the things I shouldn't anymore. Cause we just had a baby 8 months ago and he said he wants to be here at least for here 18 birthday but he won't cut the things out that is going to save him so... I am to the point to where im just let it go , and let nature do whatever.
How do you cope and move on after losing an older spouse when you’re much younger?
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