In the beginning '... the earth was ... God said ...' See Genesis 1:2-3
There was no denial of the state of things but 'God said ...'.

In Romans 4:17 we read '.. God calls those things which do not exist and though they did.'

God does not call that which is as being not!

You look at Jesus by whose stripes you were healed, you do not look at your sickness.
Looking at Jesus is not a denial of your sickness.
Be honest, you are sick, but don't take your eyes off him.
Looking at Jesus does not mean not taking your medicine, do not ignore his provision because you don't like the bottle!