Remember to be sincere about confiding all your sins to the leader, and seek forgiveness for them once for all. It is not possible that you regret now what you have done and next moment end up doing same thing again.
Collection Information About Worship Place
Before heading to church, mosque, temple or any other worship place, you should collect information about the prayer leader, when he is free often and what is the best time to get help from him.
Confide Your Sins
It is not possible that at age of 54 or more or less, you can tell the entire description and details of each sin you have committed, but it can be you confide about what you have generally been doing bad. This can involve other people and other living souls on this earth.
Although you cannot see God's is watching you, but a prayer leader can tell from your attitude whether you are genuinely regretful. He does not have authority to forgive your sins on behalf of God, but he can be more helpful in telling you remedial measures.
Ask for Prayers
Before you leave the worship place after confessing as much as you can, ask the prayer leader to pray for your forgiveness. People praying on your behalf can be sometimes helpful, as you do not know whose prayers are accepted more by God and whose not.