For me Pride is the sin I would say I could most accuse myself of, but then I don't see all Pride as 'sin'. Here I have taken the old Biblical saying "Pride goeth before a fall" and flipped it on it's head, lets "Use Pride to Prevent the Fall" in this case something that is close to my heart the fall of nature/the environment. In helping to save the precious gifts given to us by nature from something as simple as digging our hands into the good clean dirt to plant a sapling through to the innovation of creating clean, green ways to exist with nature we can actually learn Humility the virtue which is given to balance the sin of Pride.
So take Pride in Life, All Life and in helping to save it.