Susanna Wesley - Search Me, Oh God

Before Susanna Wesley would enter into prayer, she would spend up to 15 minutes of preparing her soul to worship. She believed prayer was worship. She also spent a similar amount of time seking cleansing from sin. 

John Kirk in his biography of her records these words from her diary:

“You, above all others, have most need of humbling yourself before the great and holy God, for the very great and very many sins you daily are guilty of, in thought, word, and deed, against His Divine Majesty. What an habitual levity is there in your thoughts! How many vain, impure thoughts pass through the mind in one hour! And though they do not take up their abode for any long continuance, yet their passing through often leaves a tincture of impurity. How many worldly regards, even in sacred actions, with habitual inadvertence; seldom any seriousness, or composure of spirit; the passions rude and tumultuous, very susceptible of violent impressions, from light and inconsiderable accidents, unworthy a reasonable being, but more unworthy a Christian. Keep thy heart with all diligence,—thy thoughts, thy affections,—for out of them are the issues of life. Who can tell how oft he offendeth in this kind? Oh, cleanse Thou me from secret faults | Out of the abundance of the heart the mouth speaketh. How many unnecessary words are you guilty of daily? How many opportunities of speaking for the good of the souls committed to your care are neglected? How seldom do you speak of God with that reverence, that humility, that gravity that you ought? Your words, as well as your thoughts, are deficient. You do not conceive or speak of God aright. You do not speak magnificently or worthily of Him who is the high and lofty One that inhabiteth eternity, the Creator of the Universe!” (p186)