Originally Posted by White Peony
Do I absolutely have to have one?
No, not now. But if you join seminary you will typically be assigned one.
As iron sharpens iron, so man sharpens man.
It is a beautiful thing. Find one who is a Priest would be my suggestion. Then you have someone who you are accountable to who can also give absolution when discussing/confessing the temptations all face in life. It is really great. A study guide is, “An introduction to the Devout Life” by St Francis DeSales.
St Francis also instructs one to have a partner on ones spiritual path. I would strongly suggest having a spiritual director.