Let me add one thing to this, does the Bible say we should be sad and think negative thoughts? What about the spies that Israel sent into the promise land to see what it looked like? The negative ones who complained died while the ones who saw from God’s perspective lived and conquered the land.

Psalm 121

A song of ascents.

1 I lift up my eyes to the mountains— where does my help come from? 2 My help comes from the Lord, the Maker of heaven and earth. 3 He will not let your foot slip— he who watches over you will not slumber; 4 indeed, he who watches over Israel will neither slumber nor sleep. 5 The Lord watches over you— the Lord is your shade at your right hand; 6 the sun will not harm you by day, nor the moon by night. 7 The Lord will keep you from all harm— he will watch over your life; 8 the Lord will watch over your coming and going both now and forevermore.