The righteous shall be glad in the LORD and shall trust in Him; and all the upright in heart shall glory. – Psalm 64:10

Among all men there are none who enjoy such a constant peace of mind as believers in Christ. Our joy is not like that of the sinner, noisy and boisterous. You know what Solomon says- “The laughter of fools is as the crackling of thorns under a pot”-a great deal of blaze and much noise, and then a handful of ashes, and it is all over. “Who hath woe, who hath redness of the eyes? They that tarry long at the wine-men of strength to mingle strong drink.” The Christian, in truth, does not know much of the excitement of the bowl, the viol and the dance, nor does he desire to know; he is content that he possesses a calm deep-seated repose of soul. “He is not afraid of evil tidings, his heart is fixed, trusting in the Lord.” He is not disturbed with any sudden fear: he knows that “all things work together for good to them that love God, to them who are the called according to His purpose.” He is in the habit in whatever society he may be, of still lifting up his heart to God; and therefore, he can say with the Psalmist, “My heart is fixed, O God, my heart is fixed: I will sing and give praise.” “There is a river the streams whereof make glad the city of God.” Believers drink of that river and thirst not for carnal delights. They are made “to lie down in green pastures,” and are led “beside the still waters.” Now this solid, lasting joy and peace of mind sets the Christian so on high above all others, that I boldly testify that there are no people in the world to compare with him for happiness. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0562.cfm