Malachite effects of positive and negative
As much as Malachite is known to be helpful in growth and protect against certain negative; it brings out the inner you, be it negative or positive.
I was going through a rough time couple of months ago, hence was introduced to Malachite. However, due to the reason that I'm not very good at programming crystals, the negativity was brought out and words/thoughts came out more abusive.
Before things spiral down, I got my friend to re-program the malachite, and had to avoid wearing them, unless I wore crystals such as Tigers Eye that are able to cancel the "negative" effects.
From then on, everything seems well, I feel more positive and less abusive. Therefore, I strongly recommend that people who seek to "grow out from their old ways" using Malachite, to monitor the effects and try to add on crystals that can amplify positive thinking.