He that dwelleth in the secret place of the most High..Psalm 91:1
The secret place is an invisible shield of protection. When you feel harassed and oppressed by evil and its deeds of darkness you can ask God to for this shield, a spherical shield to encompassed you. You activate it by faith, your faith in God.

Repairer of broken walls we are to be, even of our own walls.
Maturity factors in. You build up your walls that have damage in it. Strife arrogance and hate, we need to fix our walls.

Never the less we are in the Last Days and much evil presides currently and we need Gods protection.
The secret place of the most High
Activate it with your faith but by all means mend your fence. Your invisible wall of protection around your soul.

Gods words are not in vain, heed them for your welfare and that of others. Love God and love also your fellow man.
Do this and you will ensure further protection.
The missing bricks are caused by hate and arrogance.

The Lord taught us to pray in this manner:

Our Father, Who art in heaven
Hallowed be Thy Name;
Thy kingdom come,
Thy will be done,
on earth as it is in heaven.
Give us this day our daily bread,
and forgive us our trespasses,
as we forgive those who trespass against us;
and lead us not into temptation,
but deliver us from evil. Amen.

Forgiving others, why should you suffer their poison? Forgive them in your heart and trust God in His judgements.
Feelings can be influenced by desire.