When does life become enjoyable again

I felt like things were getting better and I guess they have but I am TIRED. She is 7 months old and it feels like my every waking moment is spent worrying about her in some form or another. My health is put second, my sleep, my relationship has taken a toll (we've worked through fights, but he doesn't love dogs and she has been a struggle for us both) I love her and can't imagine life without her now, but I do miss life before her.