Im scared of being a single mom?

I have 3 small kids under the age of 3. My husband is abusive to me so i have to leave him. He told me i will regret it if i leave him, because he will change for the new woman, it will be very hard for me, and no one will want me. Ill be forever single he said.

I dont have my license yet, i dont have a good paying job, i havent finished college, im 24 and i married him at 19. He didnt let me work or go to school and want me to fully depend on him. Now im fucked up.

Sigh, any encouragement stories? I somewhat feel like i will regret l :(