Our actions are a direct result of our thoughts.
Proverbs 23:7 (NKJV) says,
“For as he thinks in his heart, so is he.”
The old saying nails it:
Everything starts with our thoughts;
Our thoughts become our words,
Our words become our actions,
Our actions become our character,
And our character becomes our destiny!
It simply means that our outward behavior is only a result of our inner life. If you are having problems, your life will not be straighten out until your mind does.