Momophone,
Pride is “the” original sin, so to speak, as it was the sin that caused the fall of the angels at the Archangel Lucifer’s acclamation, “I will not serve! I will be like unto the Most High!” His was a battle cry for pride.
St. Michael the Archangel’s response was a battlecry for humility, the virtue which drives out pride, “Who is like unto the Most High?!”
When we consider how insignificant we are compared to how great and awesome the Almight Is, it is humbling. But often, we justify and excuse much bad behavior simply because it is “me” (all-important me!) who is doing it! So, pride actually is like a doorway to many, many more sins.
I think yes, we all, by our fallen nature, have an inclination to one or more of the seven deadly sins. We may not have such a strong inclination to commit them in a spiritually mortal manner, but those seven deadlies are the “roots” of all the venial sins.
Think of the seven deadly sins as weeds. When we commit a “little” venial sin, we permit a weed to begin to grow. If we do not weed that out by frequent confession, that weed will continue to grow and grow, and its roots become stronger and deeper and more difficult to get rid of!
So whenever we realize that we have committed some offense, we should try to exercise the virtue that counters it, hard as that may be, and we should confess as well. Frequently examine your conscience. You may be truly trying to do all the “right” things while others may misjudge your motives. Don’t worry so much about what others may think (truly a form of pride!) but about what our All-Seeing, All-Knowing God sees in you.
There is an excellent little book produced by Tan Publishers on this subject. I hope it’s ok to provide a link.
marianland.com/tan_new_2000_017.html