Keep your heart with all vigilance, for from it flow the springs of life. (ESV)

Above all else, guard your heart, for everything you do flows from it. (NIV)

What fills your heart is what spills into your life.

You can see it all throughout the bible. Cain gave himself to anger, and murder came out. David let lust linger, and adultery came out. Judas gave himself to greed, and betrayal came out. 

The truth is that most of the things that are shaping us don’t look dramatic at first. It’s the “small” stuff. A bitter thought you keep revisiting. A playlist that keeps pulling you back into that old version of yourself. A show you're watching before bed, feeding your imagination. It’s the little compromise you keep calling harmless. 

Honestly, I think you know this. If you sit in bitterness long enough, it starts to distance you from those who love you the most. Give your mind to jealousy, lust, outrage, and self-pity. Whatever it is, it eventually stops being what you think about and becomes who you are.

This is why Solomon doesn’t say, “Follow your heart.” Instead, he says, “Guard your heart.” Because our hearts can both be deeply sincere and deeply wrong at the same time. It rarely pulls us toward what is best. More often than not, it pulls us toward what is easiest. What feels good fastest. What gives us control.

That is why “just follow your heart” is terrible advice.

Your heart was never meant to be your guide. It was meant to be guided. Guarded. Surrendered. Brought under the care of Jesus.

Just as a life can be slowly deformed by what we give our hearts to, it can also be slowly formed. Because your heart doesn’t simply “want what it wants.” It wants what it’s being fed. 

So guard your heart. Like Joseph, who kept turning toward God, and integrity came out. Like Mary, who surrendered to God, and obedience came out. Like Paul, who set his mind on Christ, and endurance came out.

Don’t trust your heart. Above all, guard it, fill it with the Word, and let life flow. 

Written by Blake Stanley