Live below my means, invest the rest.
I don't dress or act like people in my pay range. My house is small and in a quiet neighborhood and cost less than my salary. Car is older but paid off and I know all the quirks and have the toolbox in the back to fix it. It is probably one of the top 5 most reliable cars in history. My work dress shoes are 10 years old and my around the house shoes were new in 2019.
I spend my money where I spend my time. So I have a nice phone, a very nice monitor and mechanical keyboard, and a good computer. And all with the right to repair philosophy. Same for my wife and kids. And also good running shoes, good exercise equipment.
The plan is to get to a point where I can just not work at all and maintain my lifestyle. Three percent rule and all that. And also help launch my kids.
Something about a 25 year roof and a Japanese shit box car in my fortress of solitude.
FWIW I grew up really really really poor like you wouldn't believe so I'm okay with this.