I don't know how old you are, but when I was younger, I too could easily say I worked with this stuff all my life, and it was about thirty years until I learned the truth. These ideas are not new. They have been around for longer than you, I, or anyone else alive today. They've been deceiving people from the beginning, and unaware people will be deceived until the end. For them it will be too late. I pray that you are not one of them.
Jesus said to him, I am the Way, the Truth, and the Life; no one comes to the Father but by Me. John 14:6
"As a man thinketh in his heart, so is he."
"As ye sow so shall ye reap."
Though you might think it's scientific, it's not physical law
The Law of Attraction is a law of physics. It says that likes attract. The same is true of energy. A worldview of prosperity leads to prosperity materializing. An energy of health leads to manifest health. And so forth.
I know that these principoles work. I work with them; I watch others work with them; I help others work with them. They work magnificently.
And BTW, John is the least reliable Gospel. Most of what's unique to John it seems Jesus didn't say.