What a wonderful question!
First, start or continue to save at least 10% of whatever you make. Don't buy things on credit, it costs way too much. Save up and pay cash and look for discounts.
Second, invest in yourself. Get and stay active and healthy. Oh man, I wish someone had forced me to do that. I'm 58 now and I can barely remember what a day without pain is like. It is very true that the older you get, the harder it is to stay in shape. Gotta make that a priority or you won't enjoy your savings when you need to.
Third, don't forget to enjoy life. I don't mean go out and get drunk and party. I mean enjoy your friends and family and find a passion to last you for your life. Maybe two.