In the “old” days, a spiritual director was a person who was a trustworthy guide in moral and spiritual matters, in the journey of growing in the interior life, the life of prayer, toward holiness. He/she was deemed knowledgeable and faithful in the teachings and life of the Catholic Church, and (at best) personally experienced in the higher forms of prayer.
Now, we have institutionalized this to a point that troubles me. We have schools of spiritual direction that teach a formal course in spiritual direction and issue certification - a certificate in spiritual direction - to prove/verify it. Now, some directors may charge per hour for their “professional” (if I may use that term) counsel and advice.
These schools may have their own philosophy and curriculum, their own school of thought as to what constitutes “good” spiritual direction and what does not.
My advice: 1) seek holiness! seek sanctity! 2) find a good, holy, knowledgeable, wise, prayerful, faithful and experienced Catholic and seek advice when it seems appropriate and prudent. And if they want to get paid, look elsewhere.