It’ll take awhile to get to the point where you want to talk to other women. For the time being, just stick to getting in the gym and improving your job/wealth. You’ll know when it’s time to talk to other women.
Otherwise, you should be in No Contact with your ex. No exceptions. If you really want to get over her you’ll cease all communications. Some guys here will tell you to delete their social media as well. Personally, I think that’s overkill, but maybe you consider it if you continue to feel drained and like you can’t get away from her.