If we make mistakes, as we all do - don't run from God, run to Him.
Asking God for a specific thing will amount to limiting God to a specific answer.
Hard times may test me, they cannot destroy me.
There is never a sickness Jesus cannot heal and never a disease Jesus cannot cure. To God's power, nothing is impossible!
Avoid the trap of looking back unless it is to glorify God for what He has done.
God is building Himself in to us, making Himself part of us as the Word rules, dominates and sanctifies our spirit nature.