Here are 6 Bible verses about trusting yourself from the Old and New Testaments of the Holy Bible (King James Version), sorted from most to least relevant.
Luke 18:9 KJV
And he spake this parable unto certain which trusted in themselves that they were righteous, and despised others:
Ezekiel 33:13 KJV
When I shall say to the righteous, that he shall surely live; if he trust to his own righteousness, and commit iniquity, all his righteousnesses shall not be remembered; but for his iniquity that he hath committed, he shall die for it.
Ezekiel 16:15 KJV
But thou didst trust in thine own beauty, and playedst the harlot because of thy renown, and pouredst out thy fornications on every one that passed by; his it was.
2 Corinthians 1:9 KJV
But we had the sentence of death in ourselves, that we should not trust in ourselves, but in God which raiseth the dead:
Proverbs 28:26 KJV
He that trusteth in his own heart is a fool: but whoso walketh wisely, he shall be delivered.
Proverbs 3:5 KJV
Trust in the LORD with all thine heart; and lean not unto thine own understanding.