“Have faith in God,” Jesus answered. “Truly  I tell you, if anyone says to this mountain, ‘Go, throw yourself into the sea,’ and does not doubt in their heart but believes that what they say will happen, it will be done for them." (Mark 11:22‭-‬23)

"He who believes in Me, as the Scripture has said, out of his heart will flow rivers of living water." (John 7:38)

He will sit like a refiner of silver, burning away the dross. He will purify the Levites, refining them like gold and silver, so that they may once again offer acceptable sacrifices to the Lord. (Malachi 3:3)
Fire tests the purity of silver and gold, but the Lord tests the heart. (Proverbs 17:3)

God loves you and has good plans for you. He's got tons of promises that you need to claim by faith, just like what Caleb did.
"Not one of all the LORD’s good promises to Israel failed; every one was fulfilled." (Joshua 21:45)
"Now therefore, give me this mountain of which the Lord spoke in that day." (Joshua 14:12)

"Turn your eyes away from me, for they have overcome me." (Song of Solomon 6:5)

"It is good to praise the Lord and make music to your name, O Most High, proclaiming your love in the morning and your faithfulness at night." (Psalm 92:1-2)

"For it is by grace you have been saved, through faith—and this is not from yourselves, it is the gift of God— not by works, so that no one can boast." (Ephesians 2:8-9)