If your determination is fixed, I do not counsel you to despair.  Few things are impossible to diligence and skill.  Great works are performed not by strength, but perseverance.

From Proverbs 23:23:  “Buy truth, and do not sell it; buy wisdom, instruction, and understanding.”

Samuel Johnson (1709-1784) was an English writer.  Many of his published works featured insightful essays, sermons, and poems.