Aloha Mario,
Relax before working on others. Spend a few moments before working on others be preparing yourself with those two "keys" he mentions in P.31 of the manual after: "In Spring Forest healing, the more energy you send out to heal other, the more energy you will recieve. The keys are:..."
Then work on the person, focusing on the energy coming from the sword fingers, chopping up the sick magnetic field. See the energy coming out whether you happen to be breathing in or out.
Give up the idea that you are healing them, and any attachment to the results.
You are just sharing your love and healing message with them, let the universe supply the energy, and let their system choose what it integrates and doesn't.
Much Love, Shawn