Yes, because you are failing to believe God that he will provide. However, we know that Christ died for our sins, all of them. As long as we ask for forgiveness He is faithful to forgive us our transgressions.
That is why we need to pray for God to increase our faith, and Jesus even tells us to pray for our strength to be strengthened.
First and foremost, you must understand that anything that fall short of the perfection of God, is a sin, and that is why we will never ever be able to approach God, except through the blood of the perfect lamb, Christ Jesus.
If you think its wrong to worry, you never have had a teenage son take out your care for the first time, or your daughter who’s date shows up at the door with a face full of metal gee gaughs (old words for junk that sits around on the table at home ) Or the horror of every parent, a child that does not come home and they find their body weeks later....You certainly don’t go around saying....What me worry......