Finding contentment inside of us by doing outward things

Hello. I’m a 76 year old retired man living alone in Mobile, Al… Since my wife passed in 2019, leaving me alone, (no children) , in this strange new life that I’m searching for meaning in, I’ve
turned to, possibly, going out on 1 day to maybe even 3 month tours in my camper van. 90% of which will be boondocking. Looking for that contentment (mindset).