Welcome to the forum.
Where are you from? What tradition do you practice and how long have you practiced it?
I would agree all magick is about changing energy, but not all magick is thought of as an energy working modality, which is it’s own thing. We have a category on here Kundalini, Chakras & Energy Work - Become A Living God if you’re interested. .
As an energy worker myself, I have been a qigong practitioner for about 26 years. I am also an occultist practicing in the modern western grimoiric tradition, I also use Norse rune magick, concepts from Egyptian magick, card divination, shamanic journeying, remote viewing, European traditional witchcraft and Wort Cunning.
Baneful magick and healing conflicting energies. If you have guides with an agenda for you to be “A healer”, ass opposed to doing healing when it suits you and attacking enemies when it doesn’t, the aggressive part would be contrary to that agenda and they could very well get in the way if that is your agreement with them. healing modalities usually don;t include a component for influencing, only balancing and positive, co-creative healing.
If you made no such agreement and this is against your will, you don’t have guides you have controllers. It’s up to you if you want to get with their program or banish them to go your own way. IF that’s the issue. A divination on a case by case basis may show that there are unique issues with each failure, not one overall cause.
For getting into the Goetia you have a choice of methods. I use the Medieval European Grimoiric sigils with modern sigil techniques and pathworking… as opposed to Solomonic techniques derived from the Kabbalistic tradition or Ebbs from modern Demonolatry, the other two main popular contact techniques.
Sounds like a big topic! Feel free to open a thread and we’ll all be happy to try to help with suggestions and analysis. You may not have his permission to heal him as it’s against his free will, and divination into the causes is usually a good place to start here. Without conscious permission the guides,if they are healing guides, will not help and may block you like the block baneful workings, if that’s what’s happening. Needs more insight for sure.
I hope you find what you seek. 
Here is a getting started with magick guide.
You’ll want to get your spiritual hygiene sorted out, and start work on developing your astral senses.
Then when you can know you have a decent chance at avoiding impostors and parasites then try the first contact guides we have on here.
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