God is not limited by our limitations!
“Without weakening in his faith, he faced the fact that his body was as good as dead—since he was about a hundred years old—and that Sarah’s womb was also dead. Yet he did not waver through unbelief regarding the promise of God, but was strengthened in his faith and gave glory to God, being fully persuaded that God had power to do what he had promised.” (Rom. 4:19–21)
If you think about the impossibility of things, it's easy to allow yourself to get discouraged and to give up!
We all have many big challenges that come our way. But, God is not limited by our limitations! Just look at Abraham and his wife, Sarah. Their situation was completely impossible, from a human standpoint. They were way too old to have children, yet God promised them that they would. Abraham was strong in faith and believed that God was able to do the impossible. And, it happened just as God said it would!
Therefore, don't put limits on God! He is able to do much more than you think! Even things that are humanly impossible!
"Now to him who is able to do immeasurably more than all we ask or imagine, according to his power that is at work within us.” (Eph. 3:20)