where do i start

im a 27 year old mother of 3 beautiful kids who drive me crazy.
ages 11, 3 and 1.
i stay at home and do much of nothing.
i havent worked in 4 years and i NEED to find a job.
im a bit scared to go back to work since its been so long.
plus i have to think if its worth it cause i would have to put my kids in daycare or something.
so pretty much each and every day is just like the one before.