Not being a "good enough person" is to me an indication you may be really down on yourself... this is a very common feeling of self-depreciation. Given a choice most people will rate themselves far lower than how other people perceive them.
In religious life I've found there is often a high degree of guilt employed but we should also know that God is always Merciful and Most Compassionate and we can always ask the Almighty to forgive us .... saying that many people cannot accept the forgiveness of the Almighty and go back to the dregs of their unworthiness.
Here is a prayer asking for forgiveness:
"...seek forgiveness from God with this mighty, this great invocation:
"O Lord, I seek forgiveness from Thee by my tongue and my heart and my soul and my mind and my spirit and my body and my corporeality and my bones and my blood and my skin. Thou, verily, art the Forgiving, the Merciful.
"And I seek forgiveness from Thee, 0 my God, by the invocation whereby the fragrances of mercy have blown upon the people of rebellion and through which the sinful have been clothed in the beauteous garment of Thy forgiveness.
"And I seek forgiveness from Thee, 0 my King, by the invocation whereby the power of Thy clemency and Thy grace is made manifest and whereby the sun of loving-kindness and bounty shineth forth above the forms of the sinful.
"And I seek forgiveness from Thee, 0 Forgiver of my sins and my Creator, by the invocation whereby the wrongdoers hasten in the direction of Thy pardon and graciousness and through which the seekers stand at the gate of Thy mercy, 0 Thou the Merciful and Compassionate.
"And I seek forgiveness from Thee, 0 my Lord, by the invocation that Thou hast made a fire that burneth away all sins and rebelliousness from every one that hath repented and returned to Thee, regretting what he hath done, weeping over his actions, and secure in Thee, and through which the bodies of all created things are purified from the defilement of sins and wrongful actions and from all that Thy mighty and all-wise Self abhorreth."