To be a minister and a Christian

Robert Traill's advice to men of God striving to be faithful and longing to be fruitful:
Take heed unto thyself, that thou be a lively thriving Christian. See that all thy religion run not in the channel of thy employment. It is found by experience, that as it fares with a minister in the frame of his heart, and thriving of the work of God in his soul, so doth it fare with his ministry both in its vigour and effects. A carnal frame, a dead heart, and a loose walk, makes cold and unprofitable preaching. And how common is it for ministers to neglect their own vineyard? When we read the word, we read it as ministers, to know what we should teach, rather than what we should learn as Christians. Unless there be great heed taken, it will be found, that our ministry, and labour therein, may eat out the life of our Christianity. Not that there is any discord betwixt them; but rather a friendly harmony, when each hath its place and respect. The honest believer meditates, that he may excite his grace; and ministers too often meditate only to increase their gifts. When we preach, the sincere hearer drinks in the word; and it may be we seldom mix faith with it, to grow thereby. O how hard is it to be a minister and a Christian in some of these acts! We are still conversant about the things of God; it is our study all the week long. This is our great advantage. But take heed to thyself, lest ordinary meddling with divine things bring on an ordinary and indifferent impression of them; and then their fruit to thee, and thy benefit by them, is almost gone, and hardly recovered.
Robert Traill, "By what means may ministers best win souls?" in Works, 1:241-242