God will always give you wisdom and insight. His choosing you to do this work. Do everything for His glory alone and you will not fail. Just pray to the Holy Spirit through the loving hands of Mary. She will lead you to Him and will help you to recognize His plan, His desire, and His holiness in the work you are doing.
Prayer is so important.
Continue in the family rosary, attend daily Mass as often as you can and offer each and every situation to the Lord through Our Lady and then you will know He is with you, guiding you and protecting you. The trust is how you handle the situations. Just ask the Holy Spirit to shine His Light on the good and you will see it very clearly. Then the evil will fade away because it cannot be sustained in the Light. But you can recognize it because the Lord has given you the means of recognition.