It can be difficult not to be anxious when a problem seems very intense. But keeping faith in the God of the Bible (and the universe) is the only thing that makes sense.
Cast your worries and cares, that the Lord knows of, over completely upon Him, trusting He knows how to work things out, even if, to you, hope seems dim.
Believe in the mercy and grace of God as expressed through Jesus, His Son…who went about healing and doing good, sharing God’s love with everyone.
Close the door on all fear–speak the promises of God, which make the believer secure. Remember we’ve a covenant with God through Christ’s blood–of that fact, we can always be sure.
Cry out to the Lord if things are overwhelming–Peter did, in a time of fright. Jesus reached out and kept him from sinking during his walk on the water that night.
God created all of the mountain peaks and sends flowers to bloom on a plain. He made the vast waters of the oceans–yet designed the intricacies of the human brain.
From mountain heights to the deep sea depths, He put everything together… Jesus said, “Have faith in God.” Rely on His peace through whatever storm that you weather.
P. A. Oltrogge

And a postscript:
At those times of anxiety, worry, or doubt, believe for the good that GOD’s bringing about.
To some, these thoughts might sound simplistic, but they’re based on words that are God’s. “For with God nothing will be impossible.” He can help us against all odds.
Scriptures that encourage:
“Be anxious for nothing, but in everything by prayer and supplication, with thanksgiving, let your requests be made known to God; and the peace of God, which surpasses all understanding, will guard your hearts and minds through Christ Jesus.”
Meditate on These Things
“Finally, brethren, whatever things are true, whatever things are noble, whatever things are just, whatever things are pure, whatever things are lovely, whatever things are of good report, if there is any virtue and if there is anything praiseworthy–meditate on these things.” Philippians 4:6-8
“Because of this oath, Jesus is the one who guarantees this better covenant with God. There were many priests under the old system, for death prevented them from remaining in office. But because Jesus lives forever, his priesthood lasts forever. Therefore he is able, once and forever, to save those who come to God through him. He lives forever to intercede with God on their behalf.” Hebrews 7:22-25 NLT
“For with God nothing will be impossible.” Luke 1:37
“When I cry out to you, then my enemies will turn back; This I know, because God is for me.” Psalm 56:9 (and many other scriptures, especially in the Psalms, on crying out to the Lord)
“Fear not, for I am with you; Be not dismayed, for I am your God. I will strengthen you, Yes, I will help you, I will uphold you with My righteous right hand.” Isaiah 41:10
“Only be strong and very courageous….” Joshua 1:7
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“So Jesus said to them, ‘Because of your unbelief; for assuredly, I say to you, if you have faith as a mustard seed, you will say to this mountain, ‘Move from here to there,’ and it will move; and nothing will be impossible for you.’” Matthew 17:20
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“Now in the morning, as they passed by, they saw the fig tree dried up from the roots. And Peter, remembering, said to Him, ‘Rabbi, look! The fig tree which You cursed has withered away.’
“So Jesus answered and said to them, ‘Have faith in God. For assuredly, I say to you, whoever says to this mountain, ‘Be removed and be cast into the sea,’ and does not doubt in his heart, but believes that those things he says will be done, he will have whatever he says. Therefore I say to you, whatever things you ask when you pray, believe that you receive them, and you will have them.'” Mark 11:20-24
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“Now in the fourth watch of the night Jesus went to them, walking on the sea. And when the disciples saw Him walking on the sea, they were troubled, saying, ‘It is a ghost!’ And they cried out for fear.
“But immediately Jesus spoke to them, saying, ‘Be of good cheer! It is I; do not be afraid.’
“And Peter answered Him and said, ‘Lord, if it is You, command me to come to You on the water.’
“So He said, ‘Come.’ And when Peter had come down out of the boat, he walked on the water to go to Jesus. But when he saw that the wind was boisterous, he was afraid; and beginning to sink he cried out, saying, ‘Lord, save me!’
“And immediately Jesus stretched out His hand and caught him, and said to him, ‘O you of little faith, why did you doubt?’ And when they got into the boat, the wind ceased.
“Then those who were in the boat came and worshiped Him, saying, ‘Truly You are the Son of God.'” Matthew 14:25-33
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Keep your eyes on Jesus…
“…looking unto Jesus, the author and finisher of our faith, who for the joy that was set before Him endured the cross, despising the shame, and has sat down at the right hand of the throne of God.” Hebrews 12:2
Minister Mark Hankins has challenged believers with, “If you knew what was beyond your “mountain,” (problem), you would praise God to a much greater extent.”