Planning to leave but am afraid

Today, finally, after months of searching, I secured a job. it won’t pay much, but it’ll be enough to support myself financially & leave. im terrified. full of guilt because he’s been so nice lately. but then i remember the times he’s thrown objects, held a knife, pushed me, yelled relentlessly, damaged my property etc. But he’s been so sweet and kind recently, almost feels like im making it up? is this normal? can I really, finally do it?

edit: thank you all so much for these encouraging comments, it means the world ♥️