To change your heart, you must be determined not to allow the Word of God to be taken out your heart. You must be aware of this, that the devil comes along to rob the Word that was sown, out of your heart. He forcibly takes away the message (Mark 4:15), as in the first heart condition that was described. He does this so that you do not continue in faith, for the Word of God produces faith (Ro. 10:17). You must meditate the the Word of God, but it takes determination, endurance and diligence.
In the second heart condition, they received the Word with joy but there was no real root in themselves. They endure for a little while and when trouble or persecution arises because of the Word, they are immediately offended (become displeased, resentful) and they stumble and fall away (Mark 4:17).
The third heart condition, beloved child of God is the one that is very prevalent with a lot of people, just like with Martha. This is where the cares and anxieties of the world and the distractions of the age and the pleasure and delight and false glamour and deceitfulness of riches, and the craving and passionate desire for other things creep in and choke and suffocate the Word, and it becomes fruitless (Mark 4:19).
Beloved child of God, what we desire is heart condition number four. The seed is sown on good (well adapted) soil. These are the ones who hear the word and receive and accept and welcome it and bear fruit, some thirty times as much as sown, some sixty times as much, and some [even] a hundred times as much (Mark 4:29). Beloved child of God, we need to water the Word of God (the seed), by getting into His Word and listening to messages about Christ and being in His Presence and cultivating our relationship with the Lord King Jesus, so that you bear more and more fruit. Have the attitude of Job 23:12-I have not gone back from the commandment of His lips; I have esteemed and treasured the words of His mouth more than my necessary food. Take His yoke upon you and learn of Him (Matt. 11:29).
Mary sitting at Jesus’ feet, was inclining her heart toward the Lord, getting her heart transformed so she could later go out and serve the Lord in the power of His might, whereas Martha was trying to serve first. She needed to first incline her heart. The psalmist says, I have inclined my heart to perform your statues forever. There must be a rest first, in order to incline your heart, then, a going out to perform. This means getting into His Presence and into His Word, learning of Him. Pro. 8:34 says-Blessed (happy, fortunate, to be envied (is the man who listens to me, watching daily at my gates, waiting at the posts of my doors. You receive Wisdom (Pro. 8:35).
Beloved child of God, the most important thing in life is to know Him on a deep level. John 17:3 says-And this is eternal life: [it means] to know (to perceive, recognize, become acquainted with, and understand) You, the only true and real God, and [likewise] to know Him, Jesus [as the] Christ (the Anointed One, the Messiah), Whom You have sent. Beloved child of God, let your heart be inclined to perform His statues. Be blessed!