These two virtues can be summarized by the phrase:
“Things are to be used, people are to be loved”
Self Indulgence and inordinate attachment to things often leads to sadness, loneliness, and boredom.
Temperance is having the proper balance in the use of things , and Detachment is the ability to hold lightly the goods that we receive without inordinately clinging to them. These two virtues are not easy to acquire or keep. It is a lifelong battle, but one that is worth never giving up on. Two steps forward and one stop back. It is a constant struggle for self control and spiritual maturity, but without it, there is no peace and joy.
If we seek first comfort and pleasure, and try to grasp them tightly, the peace and joy that we are really seeking, will slip through our grasp.
Our culture confuses peace and joy with comfort and pleasure. There is a big difference!