is it too late? clearing, recommend, investment, experience, believe

Carson

hi.i plan to give again l3 exam . i was wandering if it is too late
doing cfa is lot of investment
a)money
schweser 400
cfai 750
other may be 500

b)time

can anyone recommend or share a notes that will make me feel confident?
i believe all i need is people suggestion and experience in clearing this out