between having healthy personal boundaries (Proverbs 4:23)
"Above all else, guard your heart, for it is the wellspring of life." (NIV)
"Guard your heart above all else, for it is the source of life." (Holman Christian Standard)
"Watch [Hebrew: Natsar: verb: to guard, watch, watch over, keep; to watch, guard, keep; to preserve, guard from dangers; to keep, observe, guard with fidelity; to guard, keep secret; to be kept close, be blockaded; watchman (participle)] over your heart [Hebrew: Leb: noun masculine: inner man, mind, will, heart, understanding; inner part, midst; midst (of things); heart (of man); soul, heart (of man); mind, knowledge, thinking, reflection, memory; inclination, resolution, determination (of will); conscience; heart (of moral character); as seat of appetites; as seat of emotions and passions; as seat of courage] with all diligence, For from it flow the springs of life." (NASV)
and Matthew 5:38-42?
"You have heard that it was said, `AN EYE FOR AN EYE, AND A TOOTH FOR A TOOTH.' But I say to you, do not resist [Greek: Anthistemi: verb: to set one's self against, to withstand, resist, oppose; to set against] an evil [Greek: Poneros: adjective: full of labours, annoyances, hardships; pressed and harassed by labours; bringing toils, annoyances, perils; of a time full of peril to Christian faith and steadfastness; causing pain and trouble; bad, of a bad nature or condition; in a physical sense: diseased or blind; in an ethical sense: evil wicked, bad] person; but whoever slaps you on your right cheek, turn the other to him also. If anyone wants to sue you and take your shirt, let him have your coat also. Whoever forces you to go one mile, go with him two. Give to him who asks of you, and do not turn away from him who wants to borrow from you."
Is the answer in 2 Corinthians 9:6-15?
"Now this I say, he who sows sparingly will also reap sparingly, and he who sows bountifully [literally "with blessings"] will also reap bountifully [literally "with blessings"]. Each one must do just as he has purposed [Greek: Proaireomai: verb: to bring forward, bring forth from one's stores; to bring forth for one's self, to choose for one's self before another, to prefer; to purpose] in his heart, not grudgingly [Greek: lupe: noun feminine: sorrow, pain, grief, annoyance, affliction of persons mourning] or under compulsion [Greek: Anagke: noun feminine: necessity, imposed either by the circumstances, or by law of duty regarding to one's advantage, custom, argument; calamity, distress, straits], for God loves a cheerful giver. And God is able to make all grace abound to you, so that always having all sufficiency in everything, you may have an abundance for every good deed; as it is written, 'HE SCATTERED ABROAD, HE GAVE TO THE POOR, HIS RIGHTEOUSNESS ENDURES FOREVER.' [Check the cross referenced Psalm 112 for the context of those pronouns. "He" = the man who fears the Lord.]
Now He who supplies seed to the sower and bread for food will supply and multiply your seed for sowing and increase the harvest of your righteousness; you will be enriched in everything for all liberality, which through us is producing thanksgiving to God. For the ministry of this service is not only fully supplying the needs of the saints, but is also overflowing through many thanksgivings to God. Because of the proof given by this ministry, they will glorify God for your obedience to your confession of the gospel of Christ and for the liberality of your contribution to them and to all, while they also, by prayer on your behalf, yearn for you because of the surpassing grace of God in you. Thanks be to God for His indescribable gift!"
And how exactly do I walk this out?