And Eliab his eldest brother heard when he spake unto the men; and Eliab’s anger was kindled against David, and he said, Why camest thou down hither? and with whom hast thou left those few sheep in the wilderness? I know thy pride, and the naughtiness of thine heart; for thou art come down that thou mightest see the battle… And David put his hand in his bag, and took thence a stone, and slang it, and smote the Philistine in his forehead, that the stone sunk into his forehead; and he fell upon his face to the earth. – 1 Samuel 17:28,49

Look at David. His brother asked why he had left the charge of the sheep to come down to the battle, suspecting that the pride of his heart had brought him among the soldiers and the standards. Yet nobody could bring back Goliath’s head but that young David. Take a lesson from the ruddy hero; take no notice of what your brethren say about you. Go and bring back the giant’s head. A good adventure is the best answer to evil accusations. If you are serving the Master let their scandal stir you up to more self-consecration. If they cry out against you as too forward, serve the Lord with more vigour, and you will antidote the venom of their tongues. Did you enter into Christ’s work in order to be honoured among men? Then retire from it, for you came with a bad motive. But if you enlisted purely to bring honour to Him, and to win His smile, what more do you want? What more do you want? Be not therefore disheartened because you are not applauded. Be certain of this, that to be kept in the rear rank is often necessary to future eminence. If you take a man and put him in front, and pat him on the back and say, “What a great man he is”! he will make a false step before long, and there will be an end of your hero; but when a man is brought forward by God, he is often one whom everybody criticizes, finds fault with, and declaims as an impostor, but the banter he is exposed to serves as ballast for his mind. When he comes off with success he will not be spoiled with conceit, for the grace of God will make him bow with gratitude. The sword that is meant for a princely hand, to split through skull and backbone in the day of battle, must be annealed in the furnace again and again; it cannot be fit for such desperate work until it has passed through the fire full many a time. Do not ask to be appreciated. Never be so mean as that. Appreciate yourself in the serenity of conscience, and leave your honour with your God. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/1513.cfm