I would have to say it was a trip I did to the Philippines in 2015. We went up to the northern tip of the island of Palawan, to a place called El Nido. It involved 3 flights, an overnight stay in Manila and a 6 hour van ride to get there but it was so worth it!
Not only was it a stunning place but the laid back nature of everyone who lived in the town just changed the way I looked at life. At the time I was working in a very stable job with a great salary, slowly climbing the corporate ladder - but I was hugely unhappy.
In El Nido I saw families who were self-sufficient, dad worked as a tour guide, uncle made boats, mom ran the kitchen at the hostel, grandma ran the shop selling $0.75 beers on the beach. Every evening they'd gather to watch the sunset, talk about their days, laugh and watch the kids play simple games like knocking a bike tyre down the beach or swing from a rope hanging from a tree over the water.
It made me remember what was important in life - kindness, peace, space to breathe, actually living. No amount of money could buy this happiness for me.
A couple of months later I'd quit my job, started my own consulting business and finally ended up joining the TravelBud team to help people from all over the world have similar experiences to mine.