I (God) can also be for our own 'Mind'

I
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I form the light and create darkness,
I bring prosperity and create disaster;
I, the LORD, do all these things.

~Spoken by God in Isaiah 45:7~

I, my own mind, can make anything or situation as light or darkness, depending on our attitude if we are just 'witness' to this life drama or we become part of it thus imposing on ourselves lots of burdens and misery, over which we have little control. If we want we can always remain happy and contented, irrespective.