Prayer for guidance

We are in the process of possibly adopting a boy (14) from UK. It starting 2 years ago when we felt God placed him in our life, unexpectantly. Then as we proceeded in obedience and a hearts of compassion, during our first visit we were told his paperwork was not handled as promised and he's not available. Broken and feeling as though we failed, we returned not knowing what else to do, I simply left it in prayer knowing God is in charge. Jan. of this year we received information he is now available, so we proceeded to host him for the summer vacation as we wait. We have 3 other children, one (19) who recently walked out on us to choose a rebellious lifestyle, (12) and (8). I am struggling with the transition of this child in our family as well as 2 of my younger children. Pray for my guidance according to God's Will and control of my emotions.