Over the years I’ve taken lots of “inventories”–both natural and supernatural–and I want to share the ones that I’ve found to be the most helpful.
This is the God-given portion of your personality, the fundamental way that you are disposed to respond to situations and people. There are four classic ones, and most people are a combination of two: sanguine–the extraverted people-person; choleric–the goal-oriented leader; melancholic–the principled thinker; and phlegmatic–the intraverted, peace-making friend.
I’m primarily melancholic, with some choleric thrown in for good measure. Learning your temperament, and your spouse’s, will help you understand each other better and know how to support your spouse in his or her needs. For instance, I need time by myself (introvert time) to “go into my cave” and think, work, and rejuvenate. My wife as a sanguine needs social engagements to recharge.
The Temperament God Gave You is the best book I’ve found on this subject. It is faithfully Catholic and includes a survey to discover your temperament.
At your baptism, God gave you charisms (or gifts) to build up the Kingdom. These include things like teaching, evangelism, administration, writing, encouragement, and so on. When you do work in line with your charisms, you are energized and also the most effective.
The Catherine of Siena Institute has a charisms inventory you can take to learn your main charisms. Mine are writing, evangelism, and teaching.
This is a secular, business-oriented inventory to find out your strengths. The idea is that you should work on maximizing your strengths (kind of like focusing on your charisms) rather than trying to get better at your weaknesses.
These have been the least helpful to me of the three categories here, but I still find them interesting. Mine are input–I value and gather input from lots of people to help me; relator–I like to relate with people, connectedness–I see us all connected together (kind of obvious to Christians), and belief, which is their nod toward religious faith.
None of these is the secret key to unlocking your potential–as if that were possible apart from grace and hard work–but they can shed illumination on how God made you and how you can best use the talents and gifts he has given you.