Guides on emotional healing?

There are brief moments of "it's going to be ok" and longer periods of gloom - are there any guides or sources on how to better deal with the emotional healing/aftermath or is it just down to time or therapy or something else?

It's all very emotional, unfamiliar territory and I don't think I could name half of the stuff that's happening inside on a day to day basis.

I think I'm just trying to find a bit of hope but it sure how and where to find it right now.

Thank you