Is it ok to just manifest my desire?

psychic witch or manifestation.

Either way manifestation is a part of spell work.

Some like “ Veronica isles “ claim to have come up with a system that says, through affirmation and manifestation we can attract certain results through the law of attraction.

This theory still derives from the very foundation of spell work. It's about getting your mind into the right state, learning how to overcome the negative thinking, visualize the end results not the path to get there

Although he has some controversial views about witchcraft James Miller mentions how removing the shadow work not respecting or honoring the spirit's and God's may ok lead to undesirable results or even long-term consequences.

I myself believe a good part of what he says.

By removing the shadow work , not respecting the gods, spirits, or deities. They may look past it for a while, yet at some point it will anger them. And the consequences to all of us or just some of us individually may not be very pleasant.