I NEED POSITIVITY PLEASE!

Currently battling hyperacusis and severe depression right now due to several concussions this year. I have a 2 year old daughter that has been staying with her grandparents for almost a month now. I'm not getting any better, not necessarily worse either.. my depression is definitely taking a turn for the worse though.. I don't know how much more of this I can take. I miss my daughter. She can't stay there forever, nor would I want her to. I just can't handle it when she screams or cries..it hurts me really bad. I need positivity. I need to know it's not going to be like this forever. I want my life back. I want to be able to be a mother again. I feel like I've lost such a big part of my life and I'm never gonna get it back. My ENT told me he can "almost promise" it will get better and go away. But isn't that what they all say? I have a hard time believing him. Someone please give me some positive advice here. I can't do this anymore.