St. Theophan the Recluse...
The Lord accomplished our salvation by His death on the Cross: on the Cross He tore up the handwriting of our sins; through the Cross He reconciled us with our God and Father; and through the Cross He brought down upon us grace-filled gifts and all heavenly blessings. But this is the Lord’s Cross itself. Each of us becomes a partaker of its salvific power in no other way than through our personal cross.
When the personal cross of each of us is united with Christ’s Cross, the power and effect of the latter is transferred to us and becomes, as it were, a conduit through which every good gift and every perfect gift (James 1:17) is poured forth upon us from the Cross of Christ.
From this it is evident that the personal cross of each of us is as essential to the work of salvation as the Cross of Christ.