I know this is easier said than done...believe me.
I walk around a parking lot, a couple times a day at work, feeling bad and repenting of my anxiety, worries, etc. But, you know what? God knows our hearts and struggles and He will not hold that against us. He loves us too much to.
Just acknowledge your stressing, turn it over to Him and move forward with your day. Rinse and repeat.
"But" also, watch for the Lord's encouragements. Conversations, things you see around you (nature, certain numbers, or street signs to name a few), and especially what you feel are "coincidences".
ALL are God's way of saying, "I know what's going on and it's going to be okay."