Matthew 6:25-34 (ESV)
25 “Therefore I tell you, do not be anxious about your life, what you will eat or what you will drink, nor about your body, what you will put on. Is not life more than food, and the body more than clothing?
26 Look at the birds of the air: they neither sow nor reap nor gather into barns, and yet your heavenly Father feeds them. Are you not of more value than they?
27 And which of you by being anxious can add a single hour to his span of life?
28 And why are you anxious about clothing? Consider the lilies of the field, how they grow: they neither toil nor spin,
29 yet I tell you, even Solomon in all his glory was not arrayed like one of these.
30 But if God so clothes the grass of the field, which today is alive and tomorrow is thrown into the oven, will he not much more clothe you, O you of little faith?
31 Therefore do not be anxious, saying, ‘What shall we eat?’ or ‘What shall we drink?’ or ‘What shall we wear?’
32 For the Gentiles seek after all these things, and your heavenly Father knows that you need them all.
33 But seek first the kingdom of God and his righteousness, and all these things will be added to you.
34 “Therefore do not be anxious about tomorrow, for tomorrow will be anxious for itself. Sufficient for the day is its own trouble.
I've worried about things most of my life. I was vaguely aware that anxiety was a sin, but didn't really take it seriously until I was forced to not be anxious, in the name of my own sanity.
I used to believe that once I figured it out, then I can relax. Scripture says this is incorrect thinking:
“Trust in the LORD with all your heart, and do not lean on your own understanding. In all your ways acknowledge him, and he will make straight your paths.” (Proverbs 3:5-6, ESV)
There is a saying I sometimes say to myself: If I'm bound for Hell, worrying will not change that. (In fact, Jesus gives a similar comparison in Matthew 6:27, concerning human lifespan) If I'm bound for Heaven, worrying is forbidden anyway.
Now, this is not to say that we are to do nothing in our lives, similar to the main character in Office Space. But rather:
“So whoever knows the right thing to do and fails to do it, for him it is sin.” (James 4:17, ESV)
Taking action does not always equal anxiety. If you know you must take action, take action. This is not anxiety.
All in all, (and I say this to myself too), anxiety is futile.