Some urge us to first work out a natural plan of action, a natural goodness, a natural way of life, before turning to grace and things that are higher. This is very bad advice.
The theological virtues rank above the cardinal virtues, since the theological virtues order one to the ultimate end. True, grace builds on nature. STILL, we should not think that because grace builds on nature we should first work on a purely natural foundation only subsequently to establish a supernatural foundation. Such would be a mistaken conception, misleading in its direction and founded on pride.
We must found our lives on Christ’s foundation. He chose us. We must first accept Him and build our whole foundation on him. Enough talk of natural virtues as the starting point! Christ and the theological gifts he gives us are the starting point. Faith and Baptism; Charity and the Eucharist.