“My Son (children) don’t forget my teaching, but let your heart keep my commandments, for length of days, and years of life and peace, they will add to you. Don’t let kindness and truth forsake you. Bind them around your neck. Write them on the tablets of your heart“ -Proverbs 3:1-3
The beginning of wisdom is, on the positive side, honoring God by knowing and fearing Him properly. But at the same time, this implies a negative command: guarding your mind in order to keep it free of errors. Simply knowing the truth isn’t enough, we must keep ourselves from losing or corrupting the truth. We must, as Solomon said, engrave it on the tablet of our hearts.
In English “heart” means to talk to your emotions. And in Hebrew the “heart’ is a persons mind – their thoughts and their will.
Solomon says in Proverbs 4:23,
“Watch over your heart with all diligence. For from it flow the springs of life.”
So Solomon is saying, guard your mind and your thoughts because they will determine how you live your life.
From Pity to Praise 