Read the post again. It's full of fears and doubts.
There is no requirement in Church law to confess at all if one is only guilty of venial sins; these sins are absolved at the penitential rite of the mass or even with an imperfect act of contrition.
CCC 1458 Without being strictly necessary, confession of everyday faults (venial sins) is nevertheless strongly recommended by the Church. Indeed the regular confession of our venial sins helps us form our conscience, fight against evil tendencies, let ourselves be healed by Christ and progress in the life of the Spirit.