Yo lo traduciría como "aguántate" o "aguántalo" :)

I pulled out this used book I bought called "Mexican Slang: A Guide" by Linton H. Robinson, and this is what it says: 1. "No seas gacho" is "Don't be a drag" or "Come off it." (p. 19) 2. One frequently hears "No seas sangrón," or "No seas pesado" for "Don't be a pain in the ass." (p. 20) Well, if you're in Mexico and some parts of the Chicano Southwest, these expressions might work for you.

- Suck it up = pásatelo, trágatelo - Deal with it = lidiar con eso, tratar con ello - Don't cry about it = no llores por ello

También puedes decir "Supéralo"

Encantada! .¸¸.*☆*¸.