You, therefore, my son, be strong in the grace that is in Christ Jesus (2 Tim. 2:1, CSB).
'When you are oppressed with the weight of any duty and service in your calling, improve your trust in God's power. Perhaps you find the duty of your calling too heavy for your weak shoulders: lay the heaviest end of your burden on God's shoulder. When at any time you are sick of your work and ready with Jonah to run from it, encourage yourself with that which God said to Gideon; 'Go in this your might', has not God called you? Continue in the work God sets you to, and his strength will be engaged for you....
"In a word, Christian, rely upon your God, and make daily applications to the throne of grace for continual supplies of strength. God is so pleased that you come to him in this way, and the more often the better, and the more you come, the more you are welcome. Such a bountiful heart your God has, that while you are asking for a little peace and joy, he bids you to open your mouth wide and he will fill it. Set your needs all before the Almighty. God has strength enough to give."
~William Gurnall, The Christian in Complete Armour, 1:36-37, quoted in Voices from the Past, Vol. 1