1 . Hold fast to the promises made by God in the Bible
Capture your skeptical thoughts whenever you're facing them. Seize them and dispose of them by substituting God's truth for them. Speaking the truth out loud several times a day may be necessary as you embrace by faith what the Lord has actually stated, not your emotions. Immersion in God's promises is necessary.
2 . Hold fast to the personal promises of God.
You might have received personal promises from the Lord regarding your future. It's possible that He has demonstrated to you how He will utilize you for His glory, preserve a family member, or mend your marriage. Hold fast to the possibilities God has given you when the enemy tries to instill fear in you. When it seems that God is not or will not be trustworthy in your situation, keep in mind what He has personally promised you because He who makes promises is dependable. This has brought me serenity more times than I can remember, and I have done it again and time again during difficult situations.
3 . Hold on to God's previous faithfulness.
When doubt starts to seep in, remind yourself of God's prior faithfulness. We become more certain that He will see us through again as we remember His previous provision and deliverance (Psalm 77:11–12). It serves as a reminder that God is constant. He will remain faithful now if He was faithful back then.
4 . Hold on to the Community
Satan frequently operates alone. We are more prone to question when we distance ourselves from other Christians in difficult times. 4:12 in Ecclesiastes. When doubt creeps in, surround yourself with a group of Christians who will support you, remind you of God's truth, and join you in prayer. When we are worn out and in need of support, prayer provides protection from the enemy and His lies.
In the end, Satan's plan is to divert our attention from the hope that we have in Christ via hardships. However, as Christians, we are equipped with God's armor to withstand the devil's plans (Ephesians 6:10-18). When we arm ourselves with the inspired word of God, truth, uprightness, and faith, uncertainty cannot destroy our faith in the God.