You don't suppose he had any misgivings, provided he was in the City early enough in the morning; or slept badly, unless he indulged too freely over-night; or twinges of conscience that his life was misspent?
He thought his life a most lucky and reputable one.

He had a share in a good business, and felt that he could increase it.

Some day he would marry a good match, with a good fortune; meanwhile he could take his pleasure decorously, and sow his wild oats as some of the young Londoners sow them, not broadcast after the fashion of careless scatter-brained youth, but trimly and neatly, in quiet places, where the crop can come up unobserved, and be taken in without bustle or scandal.

Barnes Newcome never missed going to church, or dressing for dinner.

He never kept a tradesman waiting for his money.
He never drank too much, except when other fellows did, and in good company.