The Valley of Vision is a collection of Puritan prayers. These are longer than many devotionals, and much, much deeper. The website invites you to visit but not copy their material, so I am merely linking it. You can also purchase the book at the Banner of Truth Trust site.
Link: Valley of Vision
“Sin puts a child of God on self-judging;—he passes a sentence upon himself. ‘I am more brutish than any man.’ Prov. 30:2. It is dangerous to judge others, but it is good to judge ourselves. ‘If we would judge ourselves, we should not be judged.’ 1 Cor. 11:31. When a man has judged himself, Satan is put out of office: when he lays any thing to a saint’s charge, he is able to retort and say, ‘It is true. Satan, I am guilty of these sins, but I have judged myself already for them; and having condemned myself in the lower court of conscience, God will acquit me in the upper court of heaven.'”
Thomas Watson, 1620-1686