Jesus said, 'With God all things are possible' (Matthew 19:26). This is far more than the power of positive thinking. It is the power of God that makes what seems impossible possible. Nothing is impossible with God (Luke 1:37). My Lord Standing on Your Promises help us to hear back from this...
'And the apostles said to the Lord, "Increase our faith."' Luke 17:5 (New King James Version) .
(1) '...Faith cometh by hearing, and hearing by the word of God' (Romans 10:17)..... Drive doubts away by keeping your mind filled with God's Word.
Don't dwell on all the obstacles and difficulties...