An incredible mom, a great student (how many people could get through an NP program with young children, while pregnant and with the emotional stress you have been under?) and a loyal and honest wife that was truly dedicated to her family and partner.
By reminding yourself that you have your youth, your health, and a great family. Plus a newborn!!!
By reminding yourself that You have it all. Any woman that would go for him, has some pretty bad issues and in no way will ever compare to you. Trust me. This is his loss. Not yours. Time will make this more clear.