Sometimes all you can do is not think. Not wonder. Not obsess. Not imagine.
And have faith in the comfort that HE knows exactly what He's doing with you. Even when it hurts; especially when it hurts. You're not really alone, and you never will be.
...but God shows his love for us in that while we were still sinners, Christ died for us...
HE loves you in the midst of your darkest hours. And your faith and trust in that eternal, overwhelming love is all you really need to push through this.
You have breath in your lungs, love in your heart, clothes on your back, and the word of God in your hand. What are you waiting for?