1.
Actually make a budget. No, seriously, make a budget.
2.
Prune your subscriptions.
4.
Even though you're young, save for retirement, preferably in a 401(k).
5.
Invest if possible, but keep it simple.
6.
Be careful with credit cards.
7.
...but be a credit card baller, if you can.
8.
Be prepared for a big financial snafu.
9.
Spend on experiences, not stuff.
And if all of this fails... you can always just marry rich.