How do you say “I am enough” in Latin?

I want to get a tattoo that says “I am enough” in Latin, but I’ve seen it translated many ways and I would like to figure out which way is correct before I get it tattooed on my arm. I’ve seen it translated as “Ego sum satis”, “Sum satis”, and “Satis sum”. Which is the correct way?

Satis sum.

If I were you, I would think long and hard about whether you really want to be stuck with such an immature tattoo when you grow up.