Im 22yrs old who has switched my career path 4 times in the past 2 yrs. How do i change this pattern?

At first I wanted to be in nursing (M.A.) but I quit that because I really wanted to be an RN but i need to get my HS diploma (but havent passed my math exit exam). Then I went for child development (but that was uninteresting). Now i'm in cosmotology school (i want to quit that because they dont make much and have good benefits and im not interested anymore) Now i want to go back to school to become an RN but my motivation for school is so low. Please help with god advice... I'm desperate.