To be specific...

Sinners may strongly wish to become Christians, and Christians may strongly wish or desire to be rid of all their sins, and may pray for it, even with agony. They may think they are willing to be perfect, but they deceive themselves. They may feel, in regard to their sins taken all together, or in the abstract, as if they are willing to renounce them all. But take them up in the detail, one by one, and there are many sins they are unwilling to give up. They wrestle against sin in general, but cling to it in the detail.—Charles Finney