Thanks for this deep teachings
One of the best place to guide with all our might is our heart.
The bible made us to understand that all the issues of life are filled with the heart and we are to guide the heart with all diligence.

We need to be careful of what is running through our heart and what occupied our heart because what we have running in our heart is capable of making us to live a fulfilled life that will give glory to his name.
We need to be checking our heart time to time and flush out what is bad and replace them with thought of good by reading the word of god everyday and putting what we learn from the word into actions.