Pray instead of giving up:

Luke 18:1-8
1 Now He was telling them a parable to show that at all times they ought to pray and not to lose heart, 2 saying, "There was in a certain city a judge who did not fear God, and did not respect man. 3 "And there was a widow in that city, and she kept coming to him, saying, 'Give me legal protection from my opponent.' 4 "And for a while he was unwilling; but afterward he said to himself, 'Even though I do not fear God nor respect man, 5 yet because this widow bothers me, I will give her legal protection, lest by continually coming she wear me out.'" 6 And the Lord said, "Hear what the unrighteous judge said; 7 now shall not God bring about justice for His elect, who cry to Him day and night, and will He delay long over them? 8 "I tell you that He will bring about justice for them speedily. However, when the Son of Man comes, will He find faith on the earth?"

By Sowing in the Spirit we will reap everlasting life:

Galatians 6:7-9
7 Do not be deceived, God is not mocked; for whatever a man sows, this he will also reap. 8 For the one who sows to his own flesh will from the flesh reap corruption, but the one who sows to the Spirit will from the Spirit reap eternal life. 9 Let us not lose heart in doing good, for in due time we will reap if we do not grow weary.

Put your trust in God, not man!

Psalm 118:8
It is better to take refuge in the LORD Than to trust in man.

Proverbs 18:10
The name of the LORD is a strong tower; The righteous runs into it and is safe.

Conclusion:

Hebrews 10:35-39
35 Therefore, do not throw away your confidence, which has a great reward. 36 For you have need of endurance, so that when you have done the will of God, you may receive what was promised. 37 FOR YET IN A VERY LITTLE WHILE, HE WHO IS COMING WILL COME, AND WILL NOT DELAY. 38 BUT MY RIGHTEOUS ONE SHALL LIVE BY FAITH; AND IF HE SHRINKS BACK, MY SOUL HAS NO PLEASURE IN HIM. 39 But we are not of those who shrink back to destruction, but of those who have faith to the preserving of the soul.

I Corinthians 15:58
Therefore, my beloved brethren, be steadfast, immovable, always abounding in the work of the Lord, knowing that your toil is not in vain in the Lord.

Psalm 42:1-7
1 AS the deer pants for the water brooks, So my soul pants for You, O God. 2 My soul thirsts for God, for the living God; When shall I come and appear before God? 3 My tears have been my food day and night, While they say to me all day long, "Where is your God?" 4 These things I remember and I pour out my soul within me. For I used to go along with the throng and lead them in procession to the house of God, With the voice of joy and thanksgiving, a multitude keeping festival. 5 Why are you in despair, O my soul? And why have you become disturbed within me? Hope in God, for I shall again praise Him For the help of His presence. 6 O my God, my soul is in despair within me; Therefore I remember You from the land of the Jordan And the peaks of Hermon, from Mount Mizar. 7 Deep calls to deep at the sound of Your waterfalls; All Your breakers and Your waves have rolled over me.

Isaiah 40:28-31
28 Do you not know? Have you not heard? The Everlasting God, the LORD, the Creator of the ends of the earth Does not become weary or tired. His understanding is inscrutable. 29 He gives strength to the weary, And to him who lacks might He increases power. 30 Though youths grow weary and tired, And vigorous young men stumble badly, 31 Yet those who wait for the LORD Will gain new strength; They will mount up with wings like eagles, They will run and not get tired, They will walk and not become weary.