I'm not sure I'm completely following what you're trying to say exactly. And the Pharisees were being hypocritical and ignoring many social commandments, like helping the poor, which Jesus berated them for. Having a heart to WANT to help others is key. But that by itself is not enough either.
Why? I'll try again to express this. To simply pray, God give me this, take this away, bless me, etc, has the focus on yourself. You are not loving God with all your heart, mind, soul, and strenght. That is a high commandment. It is the ultimate state of love, a self-emptying, dying to all you are, where God and God alone is your desire. You desire love for love's sake alone. To be love, not for you, but for love, for God alone, "not my will, but thine be done", in me, in my body.
That is the first commandment. Because, if you do this, God fills you. You become that love of God in your body. "You are the light of the world". You are married to God, one with God, and how God sees, how God loves, is your love too! There is no distinction. That is why as that becomes you, you act as God in the world, and you will naturally love your neighbor as yourself, as an extension of who you are in the flesh, filled with divine light and love, in your mind, in your heart, in yours soul, and with all your energy or strength. Then, and only then, do you fulfill the law because it is your nature.
All the rest is just some external simulation, like training wheels on a bike that are not actually riding under your own sense of inner balance. This is why I believe Jesus didn't regard such trivial 'rules' as not picking produce on the sabath, as the religious crowd wagged their tongues at him. These laws or for man, he said. I don't know how to convey this, but this is a real state of being for everyone to realize. I believe that was, and is, the core message of everything that Jesus ever said.
In that day my laws will be written on the tablets of their heart. It is a natural response to that inner, realized Love. It is not laws outside you obey, but the law within. Understand?
So what do you make of 1 John 5:3 then?
"For this is the love of God, that we keep His commandments; and His commandments are not burdensome"
The commandements of the heart. They are not burdensome, because they are natural. To see these as laws outside yourself, to impose them, to judge others by, is to not know them in yourself.