Welcome HumblePotatoe, I too am in a similar situation except I don't have a wife to worry about deconverting (at least not anymore anyway, long story.)
I was raised as a JW and started having doubts around age 20 when my critical thinking skills were being honed and never perused my doubts until age 24 (4yrs ago). Through my own research and largely to conversations on this forum I transitioned into deist, agnostic and finally atheist.
I have had much difficulty over the last year with reconciling with the concept of eternal unconsciousness upon death. It can give me strong anxiety if I think too hard on it, will keep me up at night worrying about the dread of an early fate brought on by any number of potential causes.
I have coped with it by a lot of the advice here, talking it out with people who have backgrounds closest to mine, and keeping busy with experiencing as many new things as possible and getting out of my comfort zones as much as possible with adventure, discovery, and learning that I otherwise would have put off for when I'm in paradise and have millions of years to do so.
Achieving things is now more imminent and focusing on doing things rather than the end of things is the most help. Force a smile even when you are down and it will give you some positivity and let that translate into helping others and making new friends. Good luck to you and I wish you the best.