Please help on chosing a career. h/vac..cna nurse? im trying to do something fast and good pay.?

im 21 and i have two young kids. single and really trying to do a fast career but that will pay me good. what pays better h/vac or cna nurse? right now i have the help to be able to study a fast course. but i dont know what will get payed more.. i live in houston texas. if anyone knows please let me know. i need to do this for my kids.