Can u break it down for me?

Question

what sould your main corcern in your 20's then in your 30's and in 40's

Answer 1

20's getting out of college or trade school, establish credit
start saving for house and retirement. (perhaps buy home)
30's - Buy home, get married, have kids.
40's work, maybe go back to school. Save, save, insure you are on the right track to retirement. If enough money saved and no real serious debt, invest.

You didn't specify in what areas you were talking about so I just made a few presumptions....