One thing about adulthood that way too many people learn way too late (and have no choice but to learn the hard way): you have to be deliberate/proactive about everything. For the first time in your life, you can't be passive participant in anything.
The paradox of Islamic wealth:
The more you give away, the wealthier you become.
The more you hoard, the poorer you feel.
The more you trust Allah's rizq, the less you stress about money.