Hi David.
Welcome to dwd.
I'm so sorry for your marriage break up but glad you have good access to keeping a relationship with your daughter.
Do you have friends/family who you can be honest with about how you are feeling? Have you spoken to your GP.?
It is no wonder you are feeling low and that your world has collapsed.
I know it doesn't feel like it but you can get through this. I cant promise your life will be the same as before but you can rebuild a future for you and your daughter to enjoy, laugh together and room to heal.