This is the prayer from the Valley of Vision that I suggested may be a good prayer to pray to help us examine ourselves and to return wholeheartedly to the Lord. It has fairly old-fashioned language but it's worth persevering with, and although it makes us aware of our sin, it also reminds of God's amazing grace. It's called "Self-deprecation".
O LORD, My every sense, member, faculty, affection, is a snare to me, I can scarce open my eyes but I envy those above me, or despise those below. I covet honour and riches of the mighty, and am proud and unmerciful to the rags of others; If I behold beauty it is a bait to lust, or see deformity, it stirs up loathing and disdain; How soon do slanders, vain jests, and wanton speeches creep into my heart!
Am I attractive? what fuel for pride! Am I gifted? I lust after applause! Am I in authority? how prone to abuse my trust, make my will my law, exclude others’ enjoyments, serve my own interests and policy! Am I inferior? how much I grudge others’ pre-eminence! Am I rich? how exalted I become!
Thou knowest that all these are snares by my corruptions, and that my greatest snare is myself. I bewail that my apprehensions are dull, my thoughts mean, my affections stupid, my expressions low, my life unbeseeming; Yes what canst thou expect of dust but levity, of corruption but defilement? Keep me ever mindful of my natural state, but let me not forget my heavenly title, or the grace that can deal with every sin.