A dear friend (who knows all too well the ups and downs of having a child in need) wrote out some verses she clings to on a daily basis. These comfort me and straighten my often wayward perspective towards the truth:
'They cried out to the Lord in their trouble, and He saved them out of their distresses. He sent His word and healed them and delivered them from their destruction.' Psalm 107:19-20
'I have heard your prayer, I have seen your tears. Surely, I will heal you.' 2 Kings 20:5
'He heeded their prayer because they put their trust in Him.' I Chronicles 5:20
'You will keep him in perfect peace, whose mind is stayed on Him because he trusts in you.'