“Right thinking” comes from known biblical knowledge being applied accurately to real-life problems faced in real time.
We are told that the gift of God is a sound mind, and part of having a sound mind is possessing a certain degree of objectivity in any circumstance we find ourselves facing.
When we are thinking rightly, meaning from a truly biblical perspective, we can rise above the problems that confront us, even potentially very painful ones.
Seeing things in spirit and in truth gives us the wisdom to react more as Christ would.
For the Lord gives wisdom; from his mouth come knowledge and understanding… Proverbs 2:6 (ESV)
