I retired once, too. I just started my 40th year as a police officer. I retired from a city in Maryland and now I run patrol at a small liberal arts college's PD in the same town. Sounds like you had a great time!
I know thatr feeling - it sucks! Do you mind if I ask what kind of work you do. I'm retired. I traveled the world playing guitar for almost 50 years. I'm a musician-songwriter. I also write novels - have 3 or 4 on Amazon at the moment.