Thomas Watson is my favorite Puritan writer (at least thus far in my reading.) His books are always convicting, and this one is no exception. It is an eloquent call to a living Christianity, full of life and zeal and holy warfare.
I'll just conclude by including with the section of the book that stood out to me the most, the beginning of the chapter, "Use of Examinations":
"1. Do we strive with our hearts to get them into a holy frame? How did David awaken all the powers of his soul to serve God, Psalm 87:6. "I myself will awake early."
2. Do we set time apart to call ourselves to account, and to try our evidences for Heaven? Psalm lxxxvii. 6. "My spirit made diligent search." Do we take our hearts as a watch all in pieces, to see what is amiss and to mend it? Are we meticulously inquisitive into the state of our souls? Are we afraid of artificial grace, as of artificial happiness?
3. Do we use violence in prayer? Is there fire in our sacrifice? Does the wind of the Spirit, filling our sails, cause "groans unutterable?" Romans viii. 25. Do we pray in the morning as if we were to die at night?
4. Do we thirst for the living God? Are our souls big with holy desires? Psalm lxxiii. 25. "There is none upon earth that I desire beside you." Do were desire holiness as well as Heaven? Do we desire as much to look like Christ, as to live with Christ? Is our desire constant? Is this spiritual pulse always beating?
5. Are we skilled in self-denial? Can we deny our ease, our aims, our interest? Can we cross our own will to fulfill God's? Can we behead our beloved sin? To pluck out the right eye requires violence.
6. Are we lovers of God? It is not how much we do—but how much we love. Does love command the castle of our hearts? Does Christ's beauty and sweetness constrain us? 2 Cor. v. 14. Do we love God more than we fear hell?
7. Do we keep our spiritual watch? Do we set spies in every place, watching our thoughts, our eyes, our tongues? When we have prayed against sin, do we watch against temptation? The Jews, having sealed the stone of Christ's sepulcher, 'set a watch," Matt. xxvii. 66. After we have been at the Word, do we set a watch?
8. Do we press after further degrees of sanctity? Phil iii. 13. "Reaching forth unto those things which are before." A godly Christian is a wonder; he is the most contented yet the least satisfied: he is contented with a little of the world—but not satisfied with a little grace; he would have still more faith and be anointed with fresh oil. Paul desired to "attain unto the resurrection of the dead," Phil. iii. 11, that is, he endeavored (if possible) to arrive at such a measure of grace as the saints shall have at the resurrection.
9. Is there a holy emulation in us? Do we labor to out-shine others in piety? To be more eminent for love and good works? Do we something which is singular? Matt. v. 47. "What do you do, more than others?"
10. Are we got above the world? Though we walk on earth, do we trade in Heaven? Can we say as David? Psalm cxxxxix. 17. "I am still with you." This requires violence; for motions upward are usually violent.
11. Do we set ourselves always under God's eye? Psalm xvi. 8. "I have set the Lord always before me." Do we live soberly and godly, remembering that whatever we are doing our Judge looks on?"