Don't forget to nurture your own faith.
Some time back, was I was talking to a former colleague who was also an organist in an Anglican church. He told me that he was aware that a great many of his fellow church musicians ceased to go to church once they retired from their leadership roles in liturgical music. Now, there are some differences between Church of England and Catholic organists, chiefly being that they are generally paid. As such, I suspect that there is a greater risk that what you do becomes more of a job than a ministry. However, there is a similar risk for all those within the music and liturgy ministries, indeed all ministries that make demands on your time and energy. There is a great deal of sacrifice in being involved with such ministries. There is, of course, the time and effort in taken in preparation, in practice and rehearsals. During the liturgy itself, Holy Mass or otherwise, we can never fully immerse ourselves as we always have to keep one eye on what we are doing ...