You're not worthless. Has he said or done anything to make you believe he's genuinely sorry and does want to work it out?
I know you'd like to move past this, but in doing that please don't forget you deserve a partner that enriches your life, not one that stresses or upsets you. If he's said he wants to work on things...he needs to actually work on things. Talk, open a dialogue, even just sit down with you in silence if he doesn't know what to say yet. But if you feel ignored or undervalued, it's not good enough on his part.
Maybe you both need time, but don't lose yourself trying to keep him.